That sounds like a pretty rubbish display.Not the OP but I've been running a Mac mini with an external display for the last six years and I have to say it isn't great. Problems include:
1. DRM doesn't work so I can't stream HD content.
2. The monitor is slow at coming up when I bring the Mac out of sleep.
3. If the Mac is rebooted the monitor never comes on, I need to wait an appropriate time then type my password blind and wait for login to complete. Alternatively connect a crappy HDMI monitor I have kicking around.
4. The panel is yellowing so I will need to replace it within the next couple of years. It will probably reach its end of life at the same time as the Mac mini.
5. When Sonoma was released it couldn't set 5K resolution until an update was available.
This is the LG 5K monitor purchased from Apple, I had worse problems with a previous Dell monitor.
It seems Apple isn't great at dealing with 3rd party monitors so I would be inclined to buy an all in one next time.
The only thing putting me off is the lack of height adjustment in any of the iMacs.
I have an AOC I bought cheap when the pandemic hit. No issues other than it’s a bit wobbly. So I 3D printed a stabilising base.
Work provided me with a 32” widescreen dell. Which has been excellent. It’s probably getting close the 6 years old or older and it’s only now showing a few dead pixels. My only gripe with it is it has no KVM and touch buttons so if I want to use my Mac mini over work Mac I have to switch it.