Has anyone had any issues with the HIS HD5770 1GB or for that matter any of the 5770's? Recently purchased one to replace a Nvidia 250GTS which had heatsink issues, but getting bad lag in BC2 with the 5770 even at 1280x720Res on Medium. According to reviews this card should easily out perform the 250GTS, but at present I find it struggles to even match it. I am aware it only has 128Bit Memory
CPU AMD X2 7750 2.7Ghz
Ram: G.Skill 3GB DDr2-800
Monitor: AOC 24inch LCD (FullHD via HDMI)
OS: Windows 7 Pro 64Bit
Driver: Current 10.5 Cat driver, have tried 10.6 as well with same results.