For each instance of an episode, can you hover over the image, click on the "..." context menu, then click "media info". Are they the same file? Or do you have dupes?
Jellyfin 10.10.3 (Docker)
Ubuntu 24.04 LTS
Intel i3 12100
Intel Arc A380
OS drive - SK Hynix P41 1TB
Storage
3x WD Red Pro 6TB CMR in RAIDZ1 (JF Library)