Cant seem to find the right graphic setting

I have an acer aspire 5735 yes its not the best gaming laptop and it does have to work to play automation but it does work
the only thing i have to niggle at is the wheel size bug on some settings the wheels are a hell of a lot smaller than usual and when im trying to change the size it stays the same.
any help here ???
the only thing i have to niggle at is the wheel size bug on some settings the wheels are a hell of a lot smaller than usual and when im trying to change the size it stays the same.
any help here ???