Major performance impakt after Android upgrade to 4.3 and 4.4

[gnubaver]

Exactly the same problem as topic starter!

Had AWESOME performance using Xperia Z1 (Same phone) on 4.3
99% perfect emulation on almost everything i tested.

And now when updating to 4.4 everything has gone to ****

Tried every setting possible and even in the most simple games i get 27 fps and stutter/hickups. And sometimes 60 fps, but absolutley not stable. It can acheive 60 fps but its going up and down.

This problem equals total sadness.