I'm trying to edit Automation Test Track to have more stuff, but this has been increasingly difficult as when I use any of the terrain tools it lags, making it impossible to do anything significant. It only happens in Automation Test Track as far as I know, as I have also edited ECUSA with no problems.
Maybe this thread helps: https://www.beamng.com/threads/fps-drops-when-painting-terrain.102529/ Other than that, I have no clue what the issue could be.
We need a Beam Whisperer to figure out what is causing this error. I get it too on all maps painting with terrain painter. It still works but it is so slow
Agreed, it makes my life so hard. at the moment it won't lag with terrain manipulation but it will with the painting tool.