The plex app refuses to play 4K and says my connection is too low. Doesn’t matter if it’s wired or an ap 5 feet away, my iPhone gets almost 850mb down in the sa

The plex app refuses to play 4K and says my connection is too low. Doesn’t matter if it’s wired or an ap 5 feet away, my iPhone gets almost 850mb down in the same room. If I play the 4K file directly from VLC I see absolutely 0 stuttering or glitches. I really don’t understand why plex has issues direct streaming (no transcoding). The computer has 16 cores so it’s not the problem, only plex has the issues. Plex has a much better UI and UX than anything else.