My PC is very Current. And very beefy. Has 4TB of SSD space a 5th gen i7 and 32GB of Ram with a GTX 980 SC 6GB. I have never had any issues until 4.13.0. Also are not short freezes. These are permanent freezes that require using task manager to kill unreal. Several times I have let it sit for more than and hour and it never unfreezes. And it always happens when alt-tabing back and forth to photoshop. I can have any other applications open at the same time and alt tab back and forth. But for some reason if I goto photoshop and try to go back it will freeze up and never unfreeze. Unreal that is/