[hoppel118]

If I set the Kodi display to 23.98, the P4/P7 samples play fine. 

Based on JGrana01's experience today after the last restart, it seems as long as the frequency is set within Kodi display matching the content (and adjusting on start/stop disabled) it plays fine. This has been my experience as well and I haven't restarted my Shield in days.

I tried that. This doesn't work for me. I set the "refresh rate to 23.98" and "adjust display refresh rate to On start / stop". Also with "adjust display refresh rate to Off" it doesn't work. I see the same faulty starts (spinning wheel) as before with a "refresh rate set to 59.94". After changing the settings I always restarted Kodi.

I use the Matrix build from @sk83 for my tests. May be there is a difference. But enough tests for tonight.

Regards Hoppel