Hey Dealman! Yeah, I’m not sure what’s causing it. I’ve seen my card struggle and I have a GTX 980 in my system with a scene that shouldn’t be causing that much load. But the stalls were frequent and that’s what’s bottlenecking things, just not sure what the cause is. I noticed when running my game outside the editor, I got the same thing. 4.7 was definitely a rough release but the devs at Epic are working hard to try and get the numerous issues resolved. I don’t know if I’ve seen this one pop up on the threads recently but since I was right in the middle of Profiling during my upgrade from 4.6.1 to 4.7.0, it was pretty easy to spot considering there were no functional or code changes. I know they have a 4.7.2 and a 4.7.3 release planned so I’m sure they’ll work on it but hopefully someone from Epic can look into further.