I had the Zenfone 2 as well, and the notable exception to that was Snapchat. About six months ago, they stopped making x86 versions of the app, and video was pretty pitiful.
Have you had a chance to compare that to the performance of their non-x86 app? I'm curious because I've found SnapChat to perform exceptionally poorly on every Android device I've tried.
Yes. No issue with the Nexus 5. Recording video with the Zenfone 2 was pretty poor -- totally choppy.