I think its dependent on the mouse as well as the new features in Windows 8.1. I have played a lot of games since 8.1 (preview and had the official a week before release thanks to Technet) and none have had this issue.
I have a Logitech G600.
A friend of mine had the issue in 8.1 but he has a Razer Naga 2013. He also said their driver system is pretty bad since its cloud based.
[quotemsg=11861109,0,1299045]I have a MacBook Pro portable notebook where the screen is attached to the keyboard and it folds in. I run the Windows inside my OS X and have found I don't get the lag. I do have a problem with my photo program changing where it saves my pictures can you help me find my pictures in my MacBook Pro portable computer system? [/quotemsg]
Mean while Linux side of the house reporting clear skies and smooth sailing with slight breeze and temp in mid 70's. LOL Businesses have not moved off Windows 7 for reason and only reason why I have Windows 8 at the house is because the computer came with it. Couldn't downgrade to W2K7 . Windows 8 is still beta anyways IMO.