Hello!
I have a problem with performance loss on rebuilding and relaunching project several times in a row. Looks like some sort of cache getting full or smth. UE4’s ‘Profiler’ tool shows Stat Thread to jump sky high hence a lot of CPU stalls. Is anyone familiar with stuff like this?
Right now to fix this I try deleting and building project → reboot phone → ‘Optimization’ function with RAM cleaning. It usually helps but result is not 100%. I wonder is there some sort of Task Manager app that can clean all the RAM and cache files time to time?
UPD: 4.16 has same problem. The easiest way to see it is: use GearVR throttling node with CPU and GPU modifiers set to 0, ‘stat raw’ command shows handy realtime threads, jitter can be spotted there as well.