For anyone unfamiliar, Mouse Acceleration alters the distance the mouse pointer travels dependent upon how quickly you actually moved the mouse.
Basically:
--Move the mouse slowly over 5 cm, it will travel a small distance across the screen.
--Move the mouse quickly over 5 cm, it will travel a large distance across the screen.
This makes the mouse movement erratic if you're not used to it. Try aiming for a certain spot on the screen and you'll over shoot if you move too fast, or you'll undershoot and have to crawl the pointer where you need it to go if you move too slow.
This website has a breakdown. It talks specifically about mouse acceleration from a hardware perspective, but games can do this as well:
What is mouse acceleration? | ProSettings.net
And this site has a visual representation at the bottom that makes it easy to see:
Mouse Acceleration
That's time acceleration you're talking about.
As for the mouse, there is no option for it.
I always figured the game takes whatever the main Windows settings are for that.
Exception is if Windows 10 excessive frame rates cause really slow response; mostly in interior locations.
But that's a separate issue that's not technically related to the mouse.
Can you describe a bit what you're experiencing?
And what you want to change about it?
The above pretty much explains what it is I'm experiencing. I have "Enhanced Pointer Precision" turned off in my computer settings, so it's not that.
A lot of older games use a "software mouse" and had acceleration turned on by default. Some had a setting in the options menu, those that didn't usually had setting in the .ini that could be toggled off manually. I didn't see such an option, so I didn't know if it existed. An alternative would be if a "hardware mouse" setting existed that would bypass all in-game mouse settings entirely.
I'm pretty sensitive to changes in my mouse speed, and notice when it's not operating at "normal" speed. And I might be wrong. It could just be imagining it and it's just me. But it feels like the game has Mouse Acceleration. It's not exactly a game breaker, but it feels awkward to me.