When you uninstalled previous driver, did you run DriverCleaner in safe mode. Also, some more information is required. What notebook do you have specifiaclly, OS version, Precessor, etc. What driver version are you using? Have you tried the Omega's (for that game, give the 4.12's a shot). All these can be found here
http://www.driverheavendownloads.net/ . have you updated your chipset drivers, mouse/ touchpad drivers? Is the problem happening in all games, or just CSS?
Also, off the wall question. Are you using a "System Optimizer" such as GameGain or the like? These programs tweak registry settings and Driver setting, and can really cause some problems. The reason I ask is that slow mouse response is a common problem.
Over all, I would run drivercleaner and reinstall, along with chipset drivers, my guess is you had a bad install.