Why is -drawRect faster than using CALayers/UIViews for UITableViews?

Question

I can already hear the wrenching guts of a thousand iOS developers.

No, I am not noob.

Why is -drawRect faster for UITableView performance than having mu

Answer 1

well, your program could easily end up moving and converting a lot of pixel data if going back and forth from GPU to CPU based renderers.

as well, many layers can consume a lot of memory.