Recommend a minecraft resource pack?

If your computer sucks and you want to optimise your game then using resource packs isn't a good idea, the texture will slow down your game. Anyway, I'd recommend Sphax Grunge or Chromahills.

Dokucraft is good for an average or below computer. It fund fairly smooth

Sphax is also pretty good but youd been a pretty good computer to run it. (In it with a low quality because they have a range of pixels from 16x16 to 800x800 I hink I forgot)

Block craft ir somthin like that can make it faster