I'm an "Anime-Fan" myself, and normally I use a PC with a 3.800 MHz AMD Quadcore CPU and LibreElec 9.2.6 to play my videos.
720p
1080p
8 Bit
10 Bit
h264
h265
everything works fine in every combination.
The PC stands in my Living Room and is hooked up to my TV, but because the PC is build into a Midi-Tower Case it stands out and I find it a little too big and was looking for a smaller solution.
So I got a Raspberry PI 3B+ which is also working with LibreElec 9.2.6.
Everything else here worked the same as on the PC except for the 720p 10 BIT h264 videos.
I didn't find any solution for this problem on the internet, so I asked here on the Board if there is one.
You told me, that at last there a problems with 720p 10 BIT h264 videos on the Raspberry and that there is no warranty that it will work at all.
I understand and accept your answer so I will use my PC a little bit longer to play my anime,
Maybe I will buy a PI 4 in the near future and will test by myself if the videos will be played without any artifacts. (If not, I can use the Pi 4 for something else, Recalbox maybe )
So for me the problem is solved, thanks again for your help.