Wow, I’m so glad I found this after an hour of searching all possible terms!
I have also just noticed this. I was wondering why the old issue of “dark parts of faces trailing behind lit parts” was back that I had issues with in 2011 on older TVs. Everything was ghosting and in one scene with strobe lights today I had very weird double contoures of objects.
Then I tested the same video on my PC and it looked crystal clear, so I knew it wasn’t a bad file or my TV. It only happens on Vero 4k+ OSMC with hardware acceleration on.
The command above fixed the issue. The image quality is drastically better - the skin pores aren’t blurred from the slightest movement and have far more detail now, dark parts aren’t trailing behind lit parts anymore. Also the strobe light scene is fine.
Looking forward to a permanent fix! Until then, I’ll put this command into autostart.