Yeah, this patch definitely screwed the pooch. My kids and I play on four different systems, and all four have choppy video (hard 2-3s freeze every 15-20s) as soon as the game loads with the freezes becoming more frequent until about the 15m mark when the game completely stops functioning. All four systems ran perfectly stable at their listed resolutions prior to the patch. Now none run at 1024x600/768 even at low detail. I'm not going to pay OOO $10 for the privilege of providing them test data on the preview server (hilariously awful call there), so here are the specs of the four systems:

#1:
Win7 x64 Home Premium
Core i5 2410M, 8GB RAM
nvidia GT 540M (1920x1080, 4xAA, high detail, 45fps)

#2:
Win7 x64 Ultimate
Athlon X2 6000+, 6GB RAM
nvidia GT 520 (1280x1024, 1xAA, medium detail, 40fps)

#3:
Ubuntu 12.04 LTS x64
Intel Pentium Dual-Core E2200, 4GB RAM
nvidia 9500GT (1024x768, 1xAA, low detail, 40fps)

#4:
Ubuntu 12.04 LTS x64
Athlon X2 4800+, 4GB RAM
nvidia 9500GT (1280x1024, 1xAA, low detail, 40fps)

Seems like this isn't an isolated problem. The only things in common between the four systems are a 64-bit OS and nvidia video chipsets.

Hope that helps.