You have to enable the system animations. Go to settings, developer options, then scroll down and you'll see 3 lines with "animations". Set in all 3 lines the scale to 0,25x or something higher, hope this will solve your problem.
Gesendet von mei...
The only thing you can do is, go to your installed apps, then to WhatsApp and press the "stop" button on top on the left side
Sent from my R800i using xda app-developers app
Thanks a lot
Gesendet von meinem LG-P880
I have also dual sim (xt1068) and if i enable pie I also get the "system ui has stopped" message:( only solution is to flash the Rom again, so only the dual sim versions seems to be affected
Really nice ROM, everything is working without bugs:cool: but the RAM management is compared to cm12 not so good:o