Hey there, I've recently bought a MBPro 15 inch and have set it up nicely. First I managed to get rid of the mouse acceleration using a simple script. I hate mouse acceleration after years of running modified Windows pcs without it because which causes me wrist pain and RSI and also makes mouse movement fluffy and imprecise. Thankfully the trackpad acceleration remains which is great. Main issue I'm still having is that it seems like there is a 10-50ms lag between moving the mouse and the cursor responding, this is the same for stopping movement too. Really quite annoying and extremely obvious to me cause im running my pc right next to it. I'm using exactly the same mice with both machines (Intellimice 3.0s) and it's getting rather annoying that my £1500 brand new machine feels clunkyer than a 3 year old i3 with half the number of cores and a graphics card model that is numerically "200" lower. Have tried the MS mice drivers which don't seem to make any difference. Cheers for any help in increasing pointer responsiveness and snappiness.