Well, I just got 4.3, which is smooth and sweet on my original Nexus 7. But, not surprisingly, it seems there are some app incompatibilities, even after a partition cache wipe. Here's my list so far--please add more, and also post updates when the incompatibilities have been fixed with an update:
Asphalt 7 (force closes after the splash screen)
MX Player (says it isn't compatible with this Android version)
Blox Live Wallpaper (blocks are all askew, with flickering colors
3D Tiles Live Walpaper (like Blox also askew)
Asphalt 7 (force closes after the splash screen)
MX Player (says it isn't compatible with this Android version)
Blox Live Wallpaper (blocks are all askew, with flickering colors
3D Tiles Live Walpaper (like Blox also askew)