For those of you who have seen ridiculously high CPU usage by Stream Deck on M1 Macs, you will rejoice to see this line from the release notes for Stream Deck 4.9.3:
Improve compatibility with Apple M1.
I have installed it and so far the difference is night-and-day. The Stream Deck app is soooooo much more responsive, and its CPU levels, even when making changes, is back to what I had seen on Intel Macs.