Treasure bags are a 1.3 thing so I have no idea how one would get it on the console versions
Also is that 20 hours of continuous, non-stop play? I've done testing on many 10hr non-stop sessions with the sounds off and I've found that manual saving more than twice with a certain distance between saves almost guarantees a crash when the next save happens within the same threshold.
One final important thing to note is that my obnoxiously long empty parkour world DOES NOT crash at all with the sounds and auto save ON. I'm still thinking that it's more about some things during saving cause the CPU to go sky high (something I've noticed using external programs) since I spent one 10hr run moving back and forth across a medium world without destroying/breaking tiles, and again that didn't crash with sounds+autosave on
Just count how many time you play,20 hours non stop is insane XD