I had mouse enlargement problems with win7 and also FPS drop when using Thermal vision in MW2 therefore i installed Cat 9.12 hotfix and it works great for me.
1_I got 36FPS on average in Crysis benchmark tool and now its 42.84(43
2_I had slowdowns in DIRT2 Menu whenever i set my res to 1920x1200 and custom settings and its now fixed with this driver
3_I got about 60 FPS on average with Dirt2 benchmark and now i get 78FPS(2 different maps though),so i tested myself in a same map and i get about 20 FPS more than before + it did a great increase on min FPS too,i managed to get about 40 FPS on min and with this driver i get about 60
4_Mouse Enlargement problem seems to have been fixed
5_As i said in MW2,when i switch to Thermal Vision the FPS drops to 50 from 120 but now its the same
Overall a great driver for me