The new version of the Plex Media Server uses the "Universal" build for Macs, which means it is compatible with Apple silicon and Intel Macs.

The problem is Plex likes to transcode on its own unless you tell it otherwise, either on the client or server-side. And that is the OP's answer, turn transcoding off.

If you run a Plex media server, you may need to update it right now to patch a major security flaw. The company notified some users late last week of a vulnerability affecting Plex Media Server ...

Plex, is warning users running certain Plex Media Server versions to update immediately due to a “potential security issue”.

With Plex Dash, you can edit your artwork, scan for new media, fix incorrect matches, check on server resource usage, tweak library settings and view server logs live.

Netflix and Hulu may get all the hype, but Plex's robust media management and transcoding features make it seamlessly streaming your digital media collection anywhere and anytime a cinch.

All users of Plex Media Server are urged to apply the hotfix, which directs their servers to respond to UDP requests only from the local network and not the public internet.

Plex has notified some of its users on Thursday to urgently update their media servers due to a recently patched security vulnerability.

Plex has patched and mitigated three vulnerabilities affecting Plex Media Server for Windows that could enable attackers to take full control of the underlying system when chained together.