I have 2 Framework laptops and develop software for Windows. By default Windows on the Framework doesn’t even have hibernation enabled. (As in, you can’t select it from the power menu) As being part of the s0 suspend scheme hibernation is set to a ridiculous number that makes no sense.
How yours was set to 20 minutes is a mystery to me, but I’ll stand by saying that it was not Framework’s doing. 
One possibility for it is If you are syncing your settings via OneCloud and your MS account, this could be a setting that you setup on a different computer, that was just synced to your Framework laptop.
As for this, it should look something like this:
Note: this is from our family computer which is a Dell All-in-One. I’m just using it to indicate what you should be seeing.
Depending on your batch number you either have a Realtek audio chip or a Tempo audio chip detailed here:
If your device is hibernating because of a setting which tells it to do that, then we don’t have anything here to talk about.
However if you’ve changed that setting, and you are still only seeing 20 minutes of standby time before hibernating, then I would point to your audio drivers being the culprit. There is a good chance the new Tempo chip works fine with window’s generic drivers, and your audio is not the problem at all.