Default [Q] Best Official Firmware

I was using BMK3 and got updated to poison firmware BNB2 and all went crap.
I have tried many official and unofficial firmwares. Even the ones which were working fine like BMK3 and AMF7 were also hanging and lagging. I've used only INU and INS firmwares.

Are there any firmware of any region which workis flawless and without any hangs??
Please help me...