Server Version#: 1.19.1.2645_x86-64
Player Version#: 2.55.0.1069-fc32_x64-86
A recent update to Fedora 32 made the PMP client freeze with a really weird out of focus graphic yet let the audio come thru. Versions tested were 2.55.0.1069-fc32_x64-86 (Fedora repo) and 2.58.0.1076-1.fc32.x86_64 (negativo17 repo). The QT5 is the offending problem. I downgraded qt5* to qt5-5.13.2-2.fc32 using DNF and the problem were away. I tested on 2 Plex servers and 3 clients running Fedora Cinnamon 32. Same result. An additional problem was not enough CPU. This was also cured with the downgrade. Both servers were running Fedora Cinnamon 32 - one on a Supermicro 8-core Xeon and the other an HP i7-4th gen - both with 24GB RAM. Clients were i5 and i7 laptops with 8 and 16GB RAM. Files tested were mp4, mpv, mkv, and avi. A side effect was the TV app (LG TV) was really stuttering/buffering every 5 seconds. After the downgrade on the server this went away as well. It was a long night. So both PMP and PMS were affected by QT5. I posted this on Github and they wanted it here as well.