The Elder Scrolls V: Skyrim Special Edition

The Elder Scrolls V: Skyrim Special Edition

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M'lloy ♃ Oct 28, 2016 @ 11:43am
Mouse Lag
How do I fix the mouse lag? On the old version you just change bMouseAcceleration to 0 in the INI file, but that option isn't there anymore.
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Showing 1-12 of 12 comments
M'lloy ♃ Oct 28, 2016 @ 11:46am 
I can't be the only one witht his issue. Only a slight delay.
M'lloy ♃ Oct 28, 2016 @ 12:20pm 
I've found out tht just adding that line of text under the options reduces the mouse lag by quite a bit. Not perfect, but tolerable.
NegativeX Oct 28, 2016 @ 12:21pm 
You have to manually add Bmouseacceleration=0 under [Controls] in the SkyrimPrefs.ini
Last edited by NegativeX; Oct 28, 2016 @ 12:21pm
M'lloy ♃ Oct 28, 2016 @ 12:30pm 
Yes, that fixed it thanks!
Burkieman Sep 12, 2018 @ 5:05pm 
♥♥♥♥♥♥♥ pathetic they didn't internally fix the mouse lag for this edition
Last edited by Burkieman; Sep 12, 2018 @ 5:05pm
AppleJacks Jan 17, 2019 @ 3:08pm 
Sorry for the necro post but thank you! Was searching around the web for an hour going through endless threads of dummy fixes.
Finn ™ Jan 17, 2019 @ 3:10pm 
isn't the mouse lag due to vertical sync?
Alio Apr 22, 2020 @ 4:15pm 
Mouse acceleration is set to 0 by default. If you would like to remove input lag then enable Nvidia Ultra Low Latency mode in your Nvidia control panel. :)
Xddc Jan 23, 2023 @ 5:19pm 
Originally posted by NegativeX:
You have to manually add Bmouseacceleration=0 under [Controls] in the SkyrimPrefs.ini
This feature no longer does anything in 2023, Bmouseacceleration being set to 0 in my case just made things regretfully worse it seemed. Like ten times worse.
Jason Nov 23, 2023 @ 12:55pm 
Originally posted by Alio:
Mouse acceleration is set to 0 by default. If you would like to remove input lag then enable Nvidia Ultra Low Latency mode in your Nvidia control panel. :)
god bless you
Alio Dec 8, 2023 @ 6:35pm 
Originally posted by Jason:
Originally posted by Alio:
Mouse acceleration is set to 0 by default. If you would like to remove input lag then enable Nvidia Ultra Low Latency mode in your Nvidia control panel. :)
god bless you

No problems, and to further remove any input lag and have the smoothest visuals you can do this. (Vsync enabled, never turn it off)

Force exclusive fullscreen in the Skyrimprefs ini. (Game defaults to borderless window mode and that renders your desktop behind the game which reduces performance/causes stuttering)
bBorderless=0
bFull Screen=1

75-360hz Gsync compatible monitors:
Make sure you have Nvidia color selected in the "Change Resolution" menu in the Nvidia Control Panel, and have it set to "Full" range, this will prevent colors from being washed out at 60hz Gsync. Lock your FPS to 60 (or 16.666 frametime) with RivaTuner Statistics Server. Skyrim will force a fixed 60hz refreshrate when launched, you must pull up the Steam overlay, then alt+tab the game and then alt+tab back in to get your native refreshrate working and get Gsync to work. 60hz fixed refreshrate vs 60hz Gsync with 144hz active for instance has much higher input latency so you must alt+tab to fix it and get the lower input lag of 60hz on 144hz Gsync active.

Any monitor with fixed refreshrates:
Change your monitor refreshrate to 60hz (It may be 59.997 and not 60hz exactly, check in Windows Advanced Display settings for accuracy). Make sure Nvidia ULL is turned on in NVCP, also enable Nvidia color under "Change Resolution" and set to Full range. Use RivaTuner to lock fps to slightly under your fixed refreshrate. So for 60hz even, lock to 59.993 or if it's 59.99~ lock to slightly under that (59.990).

Remember, Vsync does not cause crazy input lag, it's the pre-rendered frames being used that cause it, forcing 1-3 or even 3-6 double/triple buffered frames to be displayed and exceed your refreshrate... which causes input lag. For example, I run 144hz Gsync + In-Game Vsync and cap to 138 or slightly under the lowest regular frame drop for all my games, ex. Cyberpunk drops to 63 lowest in most demanding area, I will lock to 60 so my CPU never uses a pre-rendered frame. Nvidia Ultra Low Latency disables pre-rendered frames from being used on DX9/10/11 games. DX12 doesn't work with ULL and has its own input lag mitigations for that. You should always use Vsync as other game optimizations may be tied to their in-game implementation. Using RTSS to cap to your lowest regular frame drop will also prevent pre-rendered frames from being used often, which reduces input lag significantly.
Last edited by Alio; Dec 8, 2023 @ 10:23pm
•SKY• Jan 5, 2024 @ 3:00am 
adding the line "Bmouseacceleration=0" in the SkyrimPrefs.ini also did it for me, mouse lag is fixed now. Thanks guys! :glass_of_beer:
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Date Posted: Oct 28, 2016 @ 11:43am
Posts: 12