I think I am doing a kinda big map, although I doubt it’s in the limit of what UE4 can hold.
The problem is when editing any aspect of a brush. Whether it is a dimension shape (X, Y, or Z) or translating it on the grid. I simply select the gizmo move it and when I let go it will freeze for a few seconds. Same for the Brush Shape dimension. I will double lick a value, edit the number press tab to go to the next, but there is a couple of seconds of delay until it responds.
This is an overview of my level (Not pictured big Landscape)
I would also highly recommend checking out the forums, many of the users are willing to assist their peers on subjects such as this! I am going to mark this question as answered for tracking purposes. If your problem persists please feel free to comment and let us know!
A few things I have tried when manually profiling for hitches within the editor:
A> Simplest thing to try is disabling ‘Realtime’ in the editor using the down-arrow in the top-left.
B>Particles - Particles are active in the editor and re-execute when there are modifications.
C>Sometimes it can be NavMesh(es) for larger volume bounds. Can try disabling Auto-Update to see if hitches improve.
D> Construction Script - If utilizing Construction on many actors, can try to modify or removing some known large actors\scripts to see if hitches improve.
E>Landscape material\layers - First try to hide certain layers, or modify the material to hide certain layers. Worst case, as it will be destructive, remove the material entirely from landscape to see if hitches improve