So I have a map made in engine 4.14 made with world composition. The map is roughly 12-15 km on each side. I am using the kite demo landscape material which auto puts out grass and the cliff textures. There’s no problem, no lag at all, but I wanted to upgrade to 4.17 so I could use the river shader tool on the ue4 marketplace. This is where the problem comes in, I upgraded the engine version and now when I open up the map it lags like crazy in the editor and even more when I go to play in the editor.
I know this is not a computer spec issue because there is no lag in the 4.14 version. If anyone has an idea of what the issue may be, let me know.