Alt-Tab Mouse Acceleration Bug

[Serene Peace]

Hi, the Mouse Accel fixes in the config file work up until I Alt-Tab from the game, and then suddenly the mouse accel is back. I've been searching around the internet for answers, but have only found people asking for help with the bug but have no answers. Does this issue affect anyone else here as well, and if so do you know of a fix? Thanks!

[Panam]

It doesn't work at all for me. I have tried everything I found thru research and my mouse is still flying across the screen.

[Salamand3r-]

Originally posted by John Wick:

It doesn't work at all for me. I have tried everything I found thru research and my mouse is still flying across the screen.

Are you referring to mouse acceleration or just mouse sensitivity?

Originally posted by Serene Peace:

Hi, the Mouse Accel fixes in the config file work up until I Alt-Tab from the game, and then suddenly the mouse accel is back. I've been searching around the internet for answers, but have only found people asking for help with the bug but have no answers. Does this issue affect anyone else here as well, and if so do you know of a fix? Thanks!

Pretty much just don't alt+tab. The Gamebryo-based Bethesda games just really aren't made to work properly with it.

[Serene Peace]

Originally posted by Salamand3r-:

Originally posted by Serene Peace:

Hi, the Mouse Accel fixes in the config file work up until I Alt-Tab from the game, and then suddenly the mouse accel is back. I've been searching around the internet for answers, but have only found people asking for help with the bug but have no answers. Does this issue affect anyone else here as well, and if so do you know of a fix? Thanks!

Pretty much just don't alt+tab. The Gamebryo-based Bethesda games just really aren't made to work properly with it.

Yeah, that's what I've been doing. It's a pain in the ass and I have to restart the game whenever I forget not to, but it's not a deal breaker for me.

[Neburai]

bBackgroundMouse=1 is the setting that fixes it until you alt tab. For normal sens after alt tabbing, you need to look at these settings:

fForegroundMouseAccelBase=0
fForegroundMouseAccelTop=0
fForegroundMouseBase=?
fForegroundMouseMult=0

for some reason while researching about this, people say all 4 of these settings relate to mouse acceleration and to keep all of them at 0, but through testing, it's only the ones with accel in the name that affect it.
fForegroundMouseBase and fForegroundMouseMult directly affect the cursor sensitivity without touching acceleration. I couldn't find documentation on how these scale, but it seems to be dependent on resolution. Keeping fForegroundMouseMult at 0, and adjusting fForegroundMouseBase only seems to work fine. Not sure what exactly the mult one is multiplying, but whatever.

Through testing, these values seem right per their resolution:
720p: fForegroundMouseBase=1
1080p: fForegroundMouseBase=0.67 (setting this in the in game console shows it rounding to two decimal points, so i'm not sure if it can be more precise than this as it's actually 2/3)
1440p: fForegroundMouseBase=0.5

For other resolutions, just do the math to keep it proportional to those examples


Sorry if a response like this is a little late for the op, but seeing as i couldn't find anywhere through google about this being a good fix, i figured i'd leave this information here for anyone who also stumbles here through google with the same problem. I hope this works for anyone else who tries it!!

[Nikorek]

Originally posted by Neburai:

bBackgroundMouse=1 is the setting that fixes it until you alt tab. For normal sens after alt tabbing, you need to look at these settings:

fForegroundMouseAccelBase=0
fForegroundMouseAccelTop=0
fForegroundMouseBase=?
fForegroundMouseMult=0

for some reason while researching about this, people say all 4 of these settings relate to mouse acceleration and to keep all of them at 0, but through testing, it's only the ones with accel in the name that affect it.
fForegroundMouseBase and fForegroundMouseMult directly affect the cursor sensitivity without touching acceleration. I couldn't find documentation on how these scale, but it seems to be dependent on resolution. Keeping fForegroundMouseMult at 0, and adjusting fForegroundMouseBase only seems to work fine. Not sure what exactly the mult one is multiplying, but whatever.

Through testing, these values seem right per their resolution:
720p: fForegroundMouseBase=1
1080p: fForegroundMouseBase=0.67 (setting this in the in game console shows it rounding to two decimal points, so i'm not sure if it can be more precise than this as it's actually 2/3)
1440p: fForegroundMouseBase=0.5

For other resolutions, just do the math to keep it proportional to those examples


Sorry if a response like this is a little late for the op, but seeing as i couldn't find anywhere through google about this being a good fix, i figured i'd leave this information here for anyone who also stumbles here through google with the same problem. I hope this works for anyone else who tries it!!

Thanks, I just need help finding it. I can't see it anywhere in my fallout_default.ini. Not even when I look it up

[Salamand3r-]

Originally posted by Nikorek:

Originally posted by Neburai:

bBackgroundMouse=1 is the setting that fixes it until you alt tab. For normal sens after alt tabbing, you need to look at these settings:

fForegroundMouseAccelBase=0
fForegroundMouseAccelTop=0
fForegroundMouseBase=?
fForegroundMouseMult=0

for some reason while researching about this, people say all 4 of these settings relate to mouse acceleration and to keep all of them at 0, but through testing, it's only the ones with accel in the name that affect it.
fForegroundMouseBase and fForegroundMouseMult directly affect the cursor sensitivity without touching acceleration. I couldn't find documentation on how these scale, but it seems to be dependent on resolution. Keeping fForegroundMouseMult at 0, and adjusting fForegroundMouseBase only seems to work fine. Not sure what exactly the mult one is multiplying, but whatever.

Through testing, these values seem right per their resolution:
720p: fForegroundMouseBase=1
1080p: fForegroundMouseBase=0.67 (setting this in the in game console shows it rounding to two decimal points, so i'm not sure if it can be more precise than this as it's actually 2/3)
1440p: fForegroundMouseBase=0.5

For other resolutions, just do the math to keep it proportional to those examples


Sorry if a response like this is a little late for the op, but seeing as i couldn't find anywhere through google about this being a good fix, i figured i'd leave this information here for anyone who also stumbles here through google with the same problem. I hope this works for anyone else who tries it!!

Thanks, I just need help finding it. I can't see it anywhere in my fallout_default.ini. Not even when I look it up

You should never mess with fallout_default.ini. MO2 gives you a good ini editor - settings like that just need to be pasted into the fallout_custom.ini and they will apply.

[RedSnt]

Omg Neburai, the knowledge I've seen you dole out of here on the steam forums is absolute gold.
Setting bForegroundMouseBase to 0.5 does exactly what I wanted.
Together with bBackground Mouse=1 and OneTweak mod I can finally play New Vegas in Linux as I did in Windows, tabbing in and out without worries.
A thousand thanks.