Started a new project, no luck. Maybe its a bug? It only happens in the movie record mode thats new in 4.25
I put density to like 3 and 6 uu, still makes no difference
Found this thread but didnt really know if it was the same thing, his problem wasnt just happening in sequencer
https://answers.unrealengine.com/questions/781069/strange-culling-behavior-foliage.html
My conclusion is that it has to be a bug. I just tested it using the old method of rendering sequencer, directly from the sequence player, and grass culling is working, render is smooth as butter.
play in editor works fine. Movie Render Queue just seems to attempt to populate the entire map with grass no matter what. I didn’t notice it on my smaller maps, but on larger ones, it crashes. I tried changing the movie render game mode, still no luck.
Ill just do some manual grass painting i guess!