I got a private message from @Polytox which I may re-post here:
I also used swiftkey, then changed to swype (swift key still installed) and still had freezes.
However, if you can help Polytox, this would be very kind. Sadly he is not allowed to write replies due to his post count :/
I experienced the same freezes..
What Keyboard are you using ?
It stopped freezing after i changed back to aosp stock (used swiftkey before)
rom worked great..since a few days camera stopped working without any change.
Wifi works fine..i just set up dualboot for this rom..so no dirty flash or sth...worked out of the box
I also used swiftkey, then changed to swype (swift key still installed) and still had freezes.
However, if you can help Polytox, this would be very kind. Sadly he is not allowed to write replies due to his post count :/