Lag in gaming, but fps and benchmarks are normal

[bystander36]

I meant a fresh Windows install on a separate HDD that is not in use. This preserves your current install, and allows you to test if a fresh install would help, before you commit to it.

 

[zebrax2]

Are you on windows 8.1? IIRC there was a mouse lag problem with it which was fixed later on. Check if the fix is installed on your system

 

[ShintaiDK]

The mouse patch, note you may have to manually add games:

http://support.microsoft.com/kb/2908279

Games officially supported by the patch:
Call of Duty: Black Ops
Call of Duty: Black Ops – Multiplayer
Call of Duty: Black Ops 2
Call of Duty: Black Ops 2- Multiplayer
Call of Duty: Black Ops 2 – Zombies
Call of Duty: Ghosts – Multiplayer
Call of Duty: MW2
Call of Duty: MW2 – Multiplayer
Call of Duty: MW3
Call of Duty: MW3 – Multiplayer
Call of Duty: MW
Call of Duty: MW – Multiplayer
Counter Strike: Global Offensive
Counter Strike: Source
Deus Ex : Human Revolution
Deus Ex : Human Revolution Director’s Cut
Hitman Absolution
Hitman Sniper Challenge
Half Life 2
Metro 2033
Portal
Tomb Raider

You should already have it, since it was part of the decemeber rollup:
http://support.microsoft.com/kb/2903939

But again, games needs to be added manually.

 

[Imouto]

Some game pads make games a lag fest, try unplugging any game pad or USB device not essential for your comp.