nexus 7 faster

I have found a fast rom for the 2012 N7, I went through CM12.1, Omnirom 5.1.1 and 4.4.4, Lineage 14.1, RR 5.8.2, but none of these were good, with or without custom kernals or parrot mod. The best rom I've ran (and am currently running) is stock 4.1.2 with no mods (unless you count root). Happy...