Update: Still reproducible on PMS 1.43.4.10903 Server version: 1.43.4.10903-e5521bd8c Platform: Windows 10.0, build 26220 This issue remains present on the latest Plex Pass beta available to me. Graylog (system logging too) recorded 28,390 UltraBlurProcessor log lines in 24 hours , including 1,720 in one hour and bursts exceeding 225 lines per minute . The repeating sequence is: [UltraBlurProcessor] Failed to get color palette: Empty pixels when quantize [UltraBlurProcessor] Failed to select colors These messages originate from Plex Media Server.log .