Guild Wars 2

100% usage? Dude probably your card is running in lower pci express buss than the recommended for that card
test it with gpuz and see your supported buss and the running buss if they are different
then put in nvidia settings max power performance
and remove the card clean the pciex slot with a brush well and the card and then plug it again
this will 100% fix that problem…if its something else this will not change anything

After last patch on 14th? September i encounter large fps drop from 60fps with vsync to 10-30fps max everywhere and anywhere (except camera zoom and look at the wall lol) also i watch my gpu usage go from 60%-70% to 100% all the time after patch
i tried 3 different gfx drivers (304.79-306.02-306.23) i tried all settings custom and default (before the patch i was playing fine with 306.02)
i even format my pc and install everything fresh…..unfortunately gw2 its unplayable for me now and the problem is not my rig because i was playing fine some days before last patch. my gfx model is ASUS GTX680-DC2T-2GD5 http://www.asus.com/Graphics_Cards/NVIDIA_Series/GTX680DC2T2GD5/
i tried also oc and not oc nothing changed…
my rig is powerful ssd vertex 4, i7 2600k,8gb ram etc etc
i realy dont know what else to do… i tried everything :/