V Sync + input lag mouse movement issue

Reflexbull shared this bug 6 months ago
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Enabling Vsync (or Variable Refresh Rate) locks the fps to 60 (like the game doesn't recognize higher refresh rate monitors and defaults to 60 hz?) I am using a 170 hz monitor, that needs fixing

Also there is a huge input lag every couple of seconds when looking around (lasts for 1-2 seconds) which slows down the mouse movement by a lot

Replies (7)

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I don't think it is input lag it seems to be messed up mouse acceleration. If I put my mouse to 400 DPI and move it slowly I turn around 180 degrees. If I move it quickly I turn about 10 degrees. The Vsync thing is annoying, if you turn Vsync off then you get uncapped frames but by default it caps me at 60 too.

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I got the same issue with an AMD RX 7900 XT, occurs both on Windows 11 and Linux (tried both X11 and Wayland).

My display has 120 HZ but vsync is always 60 instead of the configured refresh rate.

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Same here.

120hz Monitor, but with vsync/vrr 60fps max (also f11 shows render frequency 60hz)

Without Vsync FPS go up

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Yea this is how it used to be in games, Vsync was limited to 60FPS, it usually isn't anymore.

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This still isn't fixed, the game is totally unplayable for me because of constant stuttering and freezing every 2 seconds while moving around...

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Hello Reflexbull,


Vertical Synchronization (VSync) will default to 60fps in SE2. Variable Refresh Rate (VRR) should allow you to match the display's frequency if your hardware is powerful enough. Note that both GPU and monitor/display have to support VRR. Could you please provide you PC's specification with the dxdiag?

Dxdiag is an app which is included in Windows OS:

  1. In Run bar type: dxdiag
    8ee40b61f4b69730a7890c6a4693134c
  2. Once the app finishes gathering information, press Save All Information - this will create a text file that you can attach here
    7e57f75792dbb4134630b9d59b808b3d

As for the input lag, it is possible that there are other processes running in the background and there is not enough resources for the game. You can check that with Task Manager and clean the unnecessary processes.


Kind Regards,

Bartosz

Keen Software House

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Hello, thank you for the answer.

As for the processes running in the background and there is not enough resources for the game, it's not the case, I have well over 16 gigs of ram available while playing (free ram, not used), and cpu utilization doesn't get higher than 30%, it mostly hovers around 15%-20%, there's 400 gigs of storage available on my nvme ssd. I didn't have this problem with SE1, if I would have to guess, I suppose the game re / renders stuff while I move and it freezes for the time of rendering, then gets back to normal once stuff is rendered, it doesn't feel asynchronous, but synchronous.


Dxdiag will be sent to you on support@keenswh.com


The mouse movement feels laggy when looking around while doing stuff. I don't really know how to explain this in words other than show you exact example on my PC, but let's say you're moving a mouse at the same speed, let's say 2 centimeters per second, for 3 seconds. First 2 seconds look good and smooth and you made your way of 4 centimeters, then it enters a state where it feels like the moving speed dropped to 0.25 centimeters per second and you made your way of 4.25 centimeters over 3 seconds instead of the intended 6 centimeters over 3 seconds. I hope this is somehow explanatory to you.

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