WoW hangs in 1 of 5 windows

[TeamGrizzly]

For unknown reason, one of my WoW window (random one) will freeze up on random intervals even though the remaining 4 are still working. The entire system will freeze if I try to close the affected window so the only way out when this happens is through a hardware reset. Any suggestion how I can find the reason and fix this? I'm running Vista 64 and Keyclone.

[confusedtx5]

I was having this problem for a little while when I had my graphics performance up too high. I was maxing out the RAM on my graphics card (not system RAM). Turn down all your graphics settings to absolute minimum and see what happens. What did it for me was turning off shadows and changing the multisampling to the lowest it could go.

[shaeman]

I didn't have machine freeze ups, but I did have 1 wow window being laggier than the others, with slight pauses.

I lowered all the settings. I also found that I had my foreground and background fps set to the same via keyclone (15).
I lowered the background fps to 10 on all 4 and it works an absolute treat now with no freeze ups.

[TeamGrizzly]

Problem getting worst after 3.1 and this week's patch. Tried lowering fps on the alt windows but no effect. Is this likely hardware or software issue? Should I reinstall Windows/WoW?

[Klesh]

My 4 clients still keep freezing every now and then, and finally lead to graphic glitches and client crashes. This started with 3.1. My graphic drivers are up to date, my graphic card isnt overheating and well, its been running smoth before the patch, so I doubt its my hardware...
It only seems to happen if I fly around northrend for a while, been leveling a mid 60 team in outlands without any troubles this afternoon.

[Simulacra]

same thing is happening to me, glitches and one window frozen, still managed to kill sladrah in HGrundrak though as the screen was just frozen, the toon was still firing like crazy