I don't have a GoPro 11 but just tried 2 4k 120fps samples and they play fine in Kodi (GBM)
1: Stream #0:0[0x1](eng): Video: hevc (Main 10) (hvc1 / 0x31637668), yuv420p10le(pc, bt709), 3840x2160, 163257 kb/s, 119.88 fps, 119.88 tbr, 120k tbn (default)
Not exactly the same format though. You could try to update mpp: https://github.com/HermanChen/mpp
Default installs in /usr/local/ so add the following lines to "make-Makefiles.bash" (otherwise it still uses the previous installed version)
-DCMAKE_INSTALL_LIBDIR:PATH='lib/aarch64-linux-gnu' \
-DCMAKE_INSTALL_PREFIX:PATH='/usr' \
In Wayland I'm only able to play the file decoded with rkmppenc to ffplay, but with high cpu load.
./rkmppenc --avhw -i file.mp4 -o - | ffplay -