AliceNoel Posted May 3, 2022 Share Posted May 3, 2022 I don't have the best internet, but i don't believe it is causing the problem (i've attached my speedtest results). With my apartment setup the living room is the only room that has a working coaxial connection, so i can't connect my PC and Mac Mini directly to the router, since they are setup in my bedroom. I did read this article here that there is a specific issue on Mac that my be causing the issue, but i have no idea if it's been fixed and there is no date on the article. Is there anything i can do to fix this? Quote Link to comment Share on other sites More sharing options...
Synergy Team Daniel Evenson Posted June 8, 2022 Synergy Team Share Posted June 8, 2022 Hi! 👋 Are you still experiencing this issue? It might be related to the port (perhaps a conflict), if you change the port in Preferences (both server and client), does that help? Also, Synergy does not use the internet to work - only the local LAN network (ie. from your computer to the router). As long as the devices are not too far from the router the connection will be fast/stable enough. Quote Link to comment Share on other sites More sharing options...
JonathanK Posted June 19, 2022 Share Posted June 19, 2022 (edited) I'm also experiencing the same issue after the update to 1.14.3 from 1.14.1: My computers are both connected to the same wifi and is about 3 meters away from the modem/router. The main computer with the keyboard and mouse is a PC and is connecting to a M1 Mac, I've tried changing the ports but that didn't help unfortunately. Appreciate any help on this! Edited June 19, 2022 by JonathanK Additional information added Quote Link to comment Share on other sites More sharing options...
AliceNoel Posted June 20, 2022 Author Share Posted June 20, 2022 I forgot to mention that i am also having issues where both the client and server computers freeze for up to 10 seconds. This happens randomly on the client computer with normal use, but it also triggers after being idle for awhile and then moving the cursor from client computer to server computer and vice versa. I've gone through a lot of troubleshooting and tried out different recommendations from the forum and they seem to have resolved most of the issues. I first ran this command on the client (m1 mac mini) "sudo ifconfig awdl0 down" (undo the command with "sudo ifconfig awdl0 up") this is basically the wifriedx solution. I honestly don't know if this did anything or not. Next i set all 3 synergy processes to low priority following this thread here: After that things felt a whole lot smoother and i haven't noticed any freezing, but lag was still present. So while still using a wifi connection, i decided to switch to a wired connection between the Windows PC and Mac Mini. Follow this thread here: So far i am not having any freezing issues and lag is very minimal. Other Issues: Clipboard sharing seems to only work with urls, i cannot copy pictures or any other type of file, drag and drop does not work. When pasting a url from server browser into client browser everything freezes for about 10 seconds, i have not found a solution to this yet. Mouse scrolling on the client computer is very slow even after setting scroll speed to max in accessibility. This reddit post says changing the logging level from info to warn or error can solve the lagging issues, but i only see Info and Dubug as options in the logging level? Quote Link to comment Share on other sites More sharing options...
merdz Posted June 23, 2022 Share Posted June 23, 2022 (edited) I'm also experiencing some serious lag on the client side. I am running windows 10 on the server side and connected to an MacbookPro M1 on the client side. Just started happening this morning. Tried to update to the newest version as well as changing the port and it's still happening. Please help Edited June 23, 2022 by merdz Quote Link to comment Share on other sites More sharing options...
Jertam Posted July 15, 2022 Share Posted July 15, 2022 I have this issue as well. I have a Windows 11 server and a MacbookPro Intel client. Previous Synergy versions worked well, but version 1.14.4 lags quite a lot. I have 300+Mb upload and download on wireless so I don't believe wireless is the issue. However, I have a network adapter ordered and will try wired when I can. In the meantime, what can we do to mitigate the issue? I've started using the Mac directly now since the lag is so bad. Why is version 1.14 so much worse than previous versions? Please advise. 1 Quote Link to comment Share on other sites More sharing options...
Jertam Posted July 15, 2022 Share Posted July 15, 2022 I installed version 1.14.5 and still see the same lag... Quote Link to comment Share on other sites More sharing options...
Jertam Posted July 20, 2022 Share Posted July 20, 2022 I have connected a wired network adapter to my Mac, bringing the upload/downloads speeds up to 900+Mb. The lag issues have disappeared so far. I still don't understand why I wireless worked well for quite a long time and started failing right after I updated to v1.14. However, with wired ethernet, the software works well again. Quote Link to comment Share on other sites More sharing options...
NULLbit Posted August 11, 2022 Share Posted August 11, 2022 Long time user of Synergy here - I have run into these problems in the past as well. Some notes that may help. - Your external network speeds (speedtest.net results) don't matter unless you are attempting to share the keyboard / mouse / clipboard over a VPN connection. That would probably be pretty slow anyway. - To get a feel for your local network speed (on windows systems) go to network and sharing center, determine the active connection, click the link in connections. In the populated status page under Connection look for "Speed". This is the negotiated local link speed on your network. But this is only 1/2 the story. - Even if your negotiated network speed is great there still may be a latency and or route issues that needs to be rooted out. - Depending on the network setup you may want to disable TLS / SSL on synergy, if there is any sort of packet inspection going on this will slow it down and cause the lag. (yes this includes home networks, some ISPs have goofy settings on their provided modems) - disabling this or creating a rule to not inspect the traffic has helped me. - If your system(s) are running multiple connections (wired and wireless) try disconnecting from the wifi - it may be preferring that connection. - If wireless only disable any performance limiting / energy saving features (EG: Set to maximum performance if able) Quote Link to comment Share on other sites More sharing options...
vict555 Posted October 26, 2022 Share Posted October 26, 2022 I just recently purchased symless and threw out my old KVM switch. However, I'm having this same issue as everyone on this thread; pretty bad stuttering mouse movement on the client side. I have fiber internet speed and the distance bewteen the server and client is ~6 feet... Windows 10 server side, Macbook Pro on client side. Running Version 1.14.5. Has anyone found a fix? I really hope this can be resolved or I'll have to exercise the refund policy otherwise Quote Link to comment Share on other sites More sharing options...
merdz Posted October 26, 2022 Share Posted October 26, 2022 @vict555I changed the port number in preferences and it stopped the lagging for me, hope this helps! Quote Link to comment Share on other sites More sharing options...
vict555 Posted October 27, 2022 Share Posted October 27, 2022 @merdz thanks for the tip. Just tried it but unfortunately still experiencing the same behavior. Will try a few more ports just in case; not sure what else to do to troubleshoot Quote Link to comment Share on other sites More sharing options...
Shubham Dadhich Posted October 28, 2022 Share Posted October 28, 2022 Okay my solution may sound really dumb but hear me out. I use a Windows and a Mac laptop. Both of them are connected via wifi and experienced lag with synergy on mac as I use windows laptop as server. Just as a random thought experiment(due to my frustration with jitters in mouse control and to and fro switching to devices while switching over the device from display edge), I though what if I try eliminating the latency by using the windows laptop as the source of network provider to my mac (use my windows laptop hotspot and connect my mac to it). Surprisingly that reduced the latency and eliminated alot of jitters. I am not sure of technical explanation but I am very interested in finding it out. For now this setup works perfectly for me as I do not need any high bandwidth, low latency network on my mac, and for browsing it works seamlessly. And the bandwidth is enough to watch any video in 4k and do zoom meetings without lag. Quote Link to comment Share on other sites More sharing options...
Rodrigo Orellana Posted November 14, 2022 Share Posted November 14, 2022 yesterday I bought symless and I have the same issue I have a mac (server) and windows 10 (client) the mouse have an horrible delay, I changed both ports but the issue persist the devices is close each other, just at the side, both using same wifi connection version 1.14.6 I would'nt want to request a refund Quote Link to comment Share on other sites More sharing options...
vict555 Posted November 14, 2022 Share Posted November 14, 2022 I tried updating the port number to 24900 and I've experienced a much smoother experience...I was ready to request a refund too 😂 Quote Link to comment Share on other sites More sharing options...
Piotr_Szulc Posted November 15, 2022 Share Posted November 15, 2022 I just had a Mouse lag/stutter issue on a client due to using an external display with a USB-C to DP output, it worked fine in the past with mini DP to DP adapter. I updated to v1.14.6 but that did not fix it. Now it only worked smooth on the main laptop screen, but when I used an extended screen (5120x1440) it lagged and stuttered. I changed my screen refresh rate back down to 60hz then back up to 120hz and then to 240hz the mouse lag went away Quote Link to comment Share on other sites More sharing options...
Digital Media man Posted November 23, 2022 Share Posted November 23, 2022 My system has been working great for years and then out of a clear blue sky this week my MacBook pro client to the Mac Mini server (both Intel) has begun giving me horrible cursor movement. I tried changing the port number, but it made no difference. Quote Link to comment Share on other sites More sharing options...
jiinny Posted March 14, 2023 Share Posted March 14, 2023 I found that synergy clipboard sharing would have problem. When I opened clippboard history ( raycast in this case ), I found there're several copied text. It looks like the same thing is being copied over and over again on the client and server. I cleared the clipboard history and the lag went away. When I copied a bit large text and then move mouse cursor between machines. The text copied itself from the clipboard, and I've attached a picture. I have a lag again, but not always. When I copied it without synergy, unsurprisingly, the clipboard item was not copied.Here's the code: https://symless.com/synergy-help/what-to-do-when-the-mouse-cursor-lagsThe description here talks about 300ms ping response time. Perhaps normal mouse tracking is fine, but it seems that clipboard copies of a certain size are causing the problem. I'm using two Macs, and I haven't tested the PC as I only use it for occasional gaming.I don't know if this is true for all cases.I hope this helps. 1 Quote Link to comment Share on other sites More sharing options...
jiinny Posted March 14, 2023 Share Posted March 14, 2023 In addtion this is server side log for a act of client side copy and mouse moving. From 4 to 8 times case by case Quote Link to comment Share on other sites More sharing options...
Synergy Team Daniel Evenson Posted March 23, 2023 Synergy Team Share Posted March 23, 2023 @jiinny I have seen these types of logs before, where there are multiple clipboard updated in the log file (that are related to lag). This issue appears when Handoff is enabled in MacOS, would that be possibility in your setup? If you disable Handoff, does that help? Please keep in mind that it might take a few minutes to take effect. 1 Quote Link to comment Share on other sites More sharing options...
Popular Post Mr.Seiko Posted May 9, 2023 Popular Post Share Posted May 9, 2023 I have experienced a lag like this since first installing Synergy years ago. I found disabling TLS gets rid of the lag completely in my case. (4 computers, Mac server, 2 Windows clients, 1 Linux client) The security concerns of not having TLS encryption enabled are not something that worries me since all of my devices that use Synergy are on an isolated subnet. 2 Quote Link to comment Share on other sites More sharing options...
ambatukam Posted September 7 Share Posted September 7 windows 10 and mac m1 just bought synergy and lagging on mac when scrolling and playing videos on social media, when I disable the handoff feature on mac it runs smoothly 1 Quote Link to comment Share on other sites More sharing options...
McB15 Posted September 24 Share Posted September 24 For what it's worth, I was having some pretty annoying Lag issues with my Mac/Win/LinuxMint setup, and it mostly went away with the clipboard sharing feature disabled. HOWEVER, it's a bloody handy feature that I wanted back, so I ran an ethernet cable from my router along the baseboards to my desk, and popped a tiny gigabit ethernet switch on the desk so all the machines would have a hardwired ethernet connection to the LAN. Now I have the clipboard feature back on, and can copy 10-20 MB images between machines (after I increased the clipboard max limit) with no discernible lag whatsoever. It might help that I'm using v3.0.80.1-RC3, but I'm happy and I hope y'all are having an easier time as V1 is getting sunset (sunsetted? wtf, English) Quote Link to comment Share on other sites More sharing options...
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