Mouse moving too fast

Hello, I'm running SUPER. I've a USB mouse attached. The mouse is too sensitive, the cursor is moving too fast which is out of my control. I've tried Control Center->Peripherals->Mouse->Advanced->Pointer acceleration, but no matther which value I set(1.0x or 20.0x), it doesn't change the mouse sensitivity. This really pains me. What I'm doing wrong? Any chance I can fix it? Thanks. -- Cheers