Hey! I have this issue popping up again, this time it is UEFN the Editor. It lags for 5 second freezes the screen. Cpu and GPU only at 24% around there. Very strange but I have had to open and close UEFN multiple times. When reopening UEFN it happens within about 5 minutes. I noticed it takes place after selecting a Data Layer. it lags, then i deselect and hit escape. The engine is unable to stop this lagging. hmmm.