I bought 3 Minisforum machines for a Kubernetes cluster and they didn't make it 11 months. They weren't even powered on most of that time. They just completely freeze with a black screen, and randomly enough to where every time I think maybe I figured out a fix it just crashes again a day later.
No issues with my UM 780 XTX, been running mine for about two years as a homelab, running k3s and a bunch of random VMs.
Are you sure you didn't buy an Intel one by any change? Because Intel is garbage.
My Minisforum M780 XTX has been rock solid for 20 months now. Bought it as a remote development box since I needed more RAM than my MacBook Air and didn't feel like shelling out $3K for a 64GB MacBook Pro. Generally prefer the remote development experience since it means the laptop stays cool, just a pain not being able to work at a cafe now and then.