Each game utilizes each piece of hardware differently, even if the overall utilization is different. It may be that the overclock your GPU has is just slightly to unstable for GW2.
That is the thing about overclocking, u can find what seems to be a perfectly stable overclock, then find that 1 or 2 games just dont like it, and u need to lower it.
I’ve got games that will run my 780 at 1300mhz on the core without a problem, and 1 that needs it to be at 1224mhz to stop the odd artifact from apearing. I personaly prefer to have a 100% stable clock so i keep my GPU at 1224mhz.
If lowering ur GPU lock stops GW2 from crashing then it is likely the OC that was causing it, u have 2 choices then, ether have 2 profiles and switch between them depending on what game ur using, or simple use the lower clock all the time.
If your OC was a factory OC and ur within warranty u may wish to get an RMA as the clock u payed for is unstable. But be sure it is indeed the OC and not somthing else.
As for Wildstar, i played it during its Beta stage, its not got that large a gap in its GPU requirments UNLESS u set the “target render scale” higher than 1×.
Anything higher than 1x and ur effectivly rendering the internal resolution higher than ur set resoultion. I,E 1,5x at 1920×1080 would effectivly be 2880×1620. Thus a much higher load is put on ur GPU.
The Wildstar devs only put such an option available to help future proof the game visualy for when much more powerfull GPU’s become more mainstream. Even a GTX 780 will have issues running WildStar at 2x render scale at 1080p as thats effectivly 4kHD.
BTW have they optimised he game engine yet ? when i played it would hammer the GPU if u looked in certain locations, for no apparent reason even on low settings (it was a known issue at the time).
