Interesting to read this thread.
I also have constant flickering, but it only occurs when I dynamically spawn actors in the world, that affect the RVT.
EDIT: Turns out that RVT and ISMs doesnt like each other too much.
I’m using ISMs to spawn footsteps and those footsteps draw to the RVT.
If I’m just spawning the footsteps as actors, no flickering occurs anymore…
Although I’d really like to know how to use ISMs for that purpose…