Any idea how to fix these flickering strange lines? Rendering with latest V-ray GPU and Phoenix, Max 2026. Bucket render at .05
that’s an interesting one 
the last seconds without movement do work fine it seems?
you can try to set the containers motion blur multiplier to 0 and see if it does the trick.
Could be that’s a similar issue i had here:
https://forums.chaos.com/forum/phoenix-fd/phoenix-fd-problems/1232548-missing-motion-blur-only-in-some-areas-of-the-container-with-ocean-setup
Also doublecheck if the ocean mode is set correctly and not in pure ocean, so it won’t overlay the simmed mesh container.
Hi
if its a moving grid , you also get artefacts in the sim around the grid edges, check in preview mode to see if u can see any artefacts their