hardware acceleration dont work on amlogic s905x

  • Hi everyone,
    Sorry to bother you. Before writing, I've read as much as I can, but I haven't been able to resolve this.

    I'm having a little problem with my SoC905x (Beelink MXIII-II 2GB): the hardware acceleration isn't working. In the options, I find an option for PRIME hardware acceleration. If I turn it on, I can watch UHD content, but as soon as something happens to the video (fast forward, rewind, out of buffer), the image is destroyed by green artifacts, and I can only stop and restart the video. If I turn it off, everything works fine, but only in SD (720p max). FHD at 1080p drops several frames and is annoying. UHD at 2160p doesn't cope (one frame every now and then). When playing FHD, the CPU is at 100%.

    The device is 2K capable. If I use its ancient Android 6.0, it runs 2K without any problems, so it's definitely a software issue (I also tried CoreElec, where the acceleration works, but I have other problems). LibreElec is the best, but I need hardware acceleration for 2K videos.

    Do you think I have any chance?

    Thank you very much.
    Best regards