Just adding my 2 cents.
win 7 64bit
16gigs Ram
eVGA GTX 780 SC
i5 3570k @ 4.2ghz stable for 2 years
soundblaster recon PCI-E card
This game had its performance issues before the patch, but i had found a nice comfrotable spot with settings on "High" with Textures set to Ultra, MSAA Off, Tesselation Off, Post Process Medium, Shadows Medium, SSAO.
Got 60 FPS except in Skyhold or other cities/villages/camps/keeps. I could handle that. The game was fine for me at least.
Now the game stutters every 5 minutes, whether I'm in a cutscene or battle or roaming around. Its a jittery, graphic interrupting stutter that just wasnt there before. The audio distorts sometimes when this happens as well. I have 70 hours played, I would have noticed! Its not game-breaking for myself but it is quite... bad.
I've done the usual, checked for background processes, not using any Overlays even for FPS measures, Anti-Virus disabled while playing. But now that I've found this thread, it appears it is NOT my system (phew!)