I already tested with just 1x1m cube, but no luck. Maybe I have to start going through the HDV line by line in comparison to rTrainer, seemed also before that it is very error-sensitive. EDIT: Oh god I fixed that, something was messed up in HDV but I don't know what because I pasted big chunk of original data there and it fixed it. But yeah, for the bug reports I'd like say that HDV editing is somehow error sensitive now, and that environment reflections are on even I turn them off from settings. Even on surfaces where there is generic cube map assigned.