SOLVED! I feel like an idiot, but solved my problem simply by reseating my card. Can't believe I didn't try it before, but I suppose the fact that it worked so well in some games just threw me. Complete answer is copied below, Link Removed due to 404 Error: Well, I've solved it! Unfortunately...
What a friendly welcome, thanks cybercore. In my case I would rather not update my motherboard BIOS as the only one that is more recent is a beta. Might try it as a last resort, but it's always a bit hair-raising! My PSU should be more than adequate: Corsair TX650 CCC 10.4 and 10.6 were worse...
That may be true (that the 5770 is an excellent card) but the reason for this thread and tons like it is that the 5770 drivers appear to prevent it working well with several very popular games. In my case it runs Resident Evil and Battlefield BC2 @ 70FPS with my preferred options, but Modern...
I have had exactly the same problem with my 5770 512, changing from a 9600GT. Stuttering/pauses in Battlefield BC2 and Dirt2, MW2 (single player mode) running at <20FPS and so on. Crysis and Resident Evil 5 much better, but 2/5 isn't great performance. More details of my set-up here, in case it...