The "automatic bouquet update when box starts" is set to no. But on a hard reboot or boot to another image on another multiboot partition, sometimes the e2m3u2 process is launching at boot but in this case it turns crazy and hangs everything.
Unfortunately, I cannot repeat this situation in myself. I use about 6 different images in Python2 / Python3 and OpenMultiboot to serve them. Everything works normally ....
The number of playlists or the frequency of updating bouquets does not matter. More critical is the number of entries in one playlist. But! I tested the code on Hispanico playlist and there are over 140'000 entries - NO PROBLEMS ... hard to find an even bigger playlist ;) besides containing a bunch of unicode characters
p.s. I found a bug in my code when importing. EPG events on DreamOS ... It's strange that no one noticed this ... Tomorrow I will update the plugin with a fix