I was getting 19 fps in Quarrymill yesterday much to my annoyance; I've 2 x 5850 VaporX in Crossfire. It seems to me that I wasn't lagging as much before maintenance, but I can't be sure, perhaps I just didn't notice...
Anyway, a guy on my linkshell suggested the beta drivers as they helped him, I was wondering if anyone else has tired them and if they've had any problems?