Different resolutions
2240x480, movie FPS 50, HAP Q, Data rate 461.51 mbits/sec
880x64, movie FPS 25, HAP Q, Data rate 7.74 mbit/sec
1600x64, movie FPS 25, HAP Q, Data rate 13.74 mbit/sec
960x64
2000x64
All played by different display machines with the same hardware conf mentioned above. Ati driver version is Q2/ 2017
No consistency in problems - sometimes they "jump" or "hang"