When it hangs, you power off/on and you go for another 90’ ?
If yes, the heat should not be involved because just off/on doesn’t let the PPM going cold…
Another idea to troubleshoot your issue :
Have you tried to change to Eco mode, to see what appends ?
I’ve only experienced a lockup once. When I was trying to open a game and also switched to HDMI while opening. And I don’t think it’s caused by heat. I would assume it’s not most of the time so there might be something wrong with your unit since we don’t encounter your issue. I’ve used my PPM almost 12 hours straight multiple times already.
It does it on presentation mode. I’ve updated to the latest firmware just when the new one came out a few days ago.
It happens very frequently while watching Netflix. It’s not hooked up to anything. No Bluetooth speaker. Only the remote is paired.
Presentation mode gets al 4 LEDs burning instead of just 3. So if it locks up frequently using presentation mode but not in any other mode, then my thoughts go towards some thermal shutdown or something similar.
Test it with the same movie or show each time to rule out any other differences.