Extremely slow shut down - 17.1 on Apple M1, Beta 9

I'm experiencing extremely long shut down times on Beta 9 on 17.1 running on Apple M1, typically around 1 minute and can go to 2 minutes.

Shut down defined as when the little dot under the Davinci icon on the dock finally disappears.

I've used all the 17.1 betas from Beta 1 to Beta 9, and this is the first time in Beta 9 that I've noticed such long shutdown times.

I've been running some Fusion compositions.

p/s I noticed a very long save-time, such that a message appeared saying it was saving. Usually, the save-time is so fast that this notification (that it is saving) isn't displayed for long, but this time it appeared for a long time. Then, after it finished saving, I wanted to quit, but the quit menu item was grayed out.

In the macOS dock, it did not give the message that "Application not responding", so it appeared normal. A few, long moments later, the Quit menu item stopped being grayed-out, and I was able to quit.

Attached is a log.

Version 17.1, beta 9

I haven't noticed this long save time, and long quit time in prior beta versions before this beta9.

DaVinci-Resolve-logs-20210219-134049.zip

(721.17 KiB) Downloaded 43 times

I've no experience with Resolve on a Mac, but a minute or two to fully flush from memory is normal on Windows.

My issue is similar but the shutdown time is infinite. I have to force quit every single time. Letting it sit for hours or a full day and it never closes completely without the force quit from activity monitor.

M1 MacBook Air - 8GB, 8core GPU, 512GB SSD
Big Sur macOS 11.2.1
DaVinci Resolve 17.1 Beta 9 for M1 Apple Silicon.

Beta 8, shutdowns were normal experience, so it's definitely something introduced in Beta 9.

With 17.1 Beta 10, I can report that exiting the application is back to the full speed experience I was expecting. No longer the long wait at all.