After switching to Plex Pass PMS is constantly utilizing one core (version 1.14.1.5488)

Gary,
Would it be fair to summarize:

  1. PMS performs SSDP (L2 broadcast) to discover.
  2. Accepts all replies
  3. For each device:
    a. HTTP query for schema
    b. Receive reply
    c. Parse
    d. If error - disable (ignore) device
    e. Else - process as appropriate