Video Lags that had crept in, in my custom Hackintosh installation are a thing of the past! I replaced the kext with the latest I found around the Interwebs and to my intense happiness, it works like a charm. No artifacts, no lag issues at all. I ought to keep a closer watch on the NVInject arena from now it seems. But it is just so refreshing to be able to work on my system without worrying about the invariable lag or lockups creeping in.