Large files & remuxes buffer while streaming in the same network

[TheDreadPirate]

1. You can configure where Jellyfin writes trancodes in Dashboard > Playback, scroll down about half way. This can be a hard drive if you desire, but we recommend SSDs since multiple transcodes, or other disk accesses, would limit write speeds thus limit transcode performance when using fast, modern hardware accelerators.
2. I vaguely recall that when you playback Dolby Vision in MPV on a PC, the GPU decoder will convert Dolby Vision to HDR10 due to licensing issues or something like that. So that may explain what is going on. Since DV8 "falls back" to HDR10, its easy to play that back by just discarding the DV enhancement layer metadata. But DV5 is a proprietary color space that probably needs to be converted to the HDR10 BT2020 color space. Much more intensive. But your GPU SHOULD be able to handle that, no problem.