There's definitely something up with the graphics I think, at least rotation. I noticed on 4.1, 4.2, 4.3 ROMs that in landscape mode it is very laggy when doing GPU things like scrolling, swiping, games, etc. Works perfectly fine in portrait mode. No idea what's up with it. This happened after a complete reflash of CM10.2 so it wasn't stale files.
Samsung Galaxy Note 3 SM-900T 32GB
Samsung Galaxy Note SGH-i717 16GB
HP TouchPad 32GB
Archos 43 Internet Tablet - 16GB + 32GB mSD
Dell Axim X50v - 128MB + 16GB CF