[fritsch]

Do - what the howto says: Deinterlace to "Auto" and save for all files. And for BBB HEVC 4k, click on the Filmrole (Filmrolle) and choosen Scaling-Method: Bilinear. It's too much in combination with Lanczos3 Downscaling and not worth it.

Edit: And btw. you still run an outdated version - even Isengard wise.