I recently bought RemedyBG to try it out since Visual Studio has been so unstable lately. Have very much enjoyed the switch. Very fast to do everything I need it to and intuitive, even if it has some parts that are rough around the edges.
One thing I did notice is that the memory usage when starting up the UE4Editor is that memory usage suddenly increased very quickly. This may be down to UE4 being so sloppily put together, and not RemedyBG's code that is at fault, but I felt it's worth reporting.
While starting up the UE4 Edtior:
After it's finished starting up:
After a few minutes:
Unreal loads a truckload of DLLs on startup, so I could see the memory usage climbing in response to that, although since it dips down after a few minutes I'm not sure what Remedy is doing memory wise.