I've now spent a few hours working with Resolve on my new Mac mini base.
I have to say I am impressed.
It's the size of a RPi (more or less!) but it can chew my projects totally fine - with some small gotchas.
- I normally edit my 4K timeline in FHD - I then change it back to 4K for rendering. I found "proxy resolution" to be buggy so that works better for me. In FHD the performance is very similar to my Desktop PC but on a small box where the fan can rarely be heard. General editing is even faster on the M4 than Windows. It's a bit snappier (all content is H264). If I change the timeline to 4K, then it cannot keep up, I can still play but I have dropped frames and the playback is laggy. BUT only because of that silly white frame around my "Picture in Picture". If I disable Fusion with SHIFT-D, then it's smooth again.
- Transitions are a bit choppier than my desktop. but they're choppy anyways even on my desktop, once they're cached, they're fine.
- The system is telling me that 85% of RAM is being used while rendering but there are 2-3GB of SWAP - not sure whether this would happen anyways or not.
- If you didn't tell me which system I was working on, I'd think my desktop got an upgrade

- When I previously tried with my Windows Laptop (powerful machine but only 4GB VRAM) it was crashing often, I could not render at all and dual monitor was impaired (the laptop doesn't allow the 3050 to drive the external monitor). I spent a morning between restarts, drivers, crashes. With the Mac Mini I had ZERO issues. I installed DR, connected my database, done. Not a single issue.
Rendering
Rendering is about 3 times SLOWER - I haven't fully tested yet but for a 20 minutes video (4K, 70Mbps) it took 58 minutes when my desktop should be done in about 20/25 minutes I think.
yet, it can render. I had no issues, no crashes. After working for a while on the 3-streams PIP, sometimes I see some momentary struggle but nothing horrible and my desktop does the same - actually it does that more often

This is working on an external USB4 SSD - and some content is on my NAS, via VPN, so pretty slow.
Very impressed. If bigger models were not so expensive...
So far I am also very impressed by MacOS. Windows 11 is - IMHO - getting worse and worse.
Below my timeline as a reference. Track 1 is 4K, Track 2 is also 4K on this occasion. Track 3 is FHD.