Greetings all,
I have been struggling with this too. And I also have nearly 300GB to upload. We seriously need the ability to temporarily increase the timeout. You cannot use the auto mouse clicker, you cannot hover and keep it moving, you cannot have uploads themselves keep it open. The private vault just closes inherently at the time stamp even less than 20 min sometimes.
Clearly, this is an extremely important need so we can at least get our data out to the Personal Vault. I started the process and can only get about 1GB uploaded before it auto locks. So I clearly cannot go through this process 300 times let alone potentially corrupting data or something due to the breaks in transfers.
If anything, we need a registry hack that could temporarily increase this timeout.