Hello, if it helps anyone I was having the same problem, and i diagnosed it to a slow response from the graphics card, to fix I forced the NVIDIA control panel to use the GTX 1060 as default ,Open NVIDIA Control Panel 3D Settings,run the editor and then hit add in the NVIDIA control panel and choose Unreal Engine then set it to always use the GTX card and Apply settings. Restart Unreal and off you go. The integrated 630 was running by default and the GTX was being started when needed but not quick enough for the editor, well thats what I decided from the debug logs.
Hope it helps someone with NVIDIA at least.