Ok, I received my new Mac Mini M2 Pro last Friday and spent the weekend backing up and transferring my data from my Mac Mini 2018. This is my work/office machine and is set up with dual screens, a back-up 1 TB SSD for work files and a back-up 8GB La Cie Porsche drive for personal files - music, photos, software, etc.
On Sunday night I "dropped" the M2 pro in in place of the 2018 machine and connected everything.
On Monday I lost a day of possible work trying to get a constant Internet access despite a strong wi-fi signal...
I spent the day rebooting the router, rebooting and replacing the extender receivers we have (my partner and I have offices on the top floor of the house so use extenders to boost the signal from the modem on the ground floor - she works on a Windows laptop in one room and spends a lot of time on Teams and had no problems with wi-fi or internet. I could never get a consistent internet connection for more than 5 minutes at a time despite a strong wi-fi signal in my office and as I work with Microsoft Office with OneDrive for my files (lots of scientifc papers and articles) that interfered with my work-flow.
Then I tried the unplugging and restarting of the Mac Mini and that solved the problem for 10 minutes, until it went to sleep... and woke with the same problem.
Now I knew it is not the wi-fi or internet connection as my M1 MacBook Pro, iPad Pro and iPhone had no problem getting full speed internet in exactly the same location. In fact I ended up using the MacBook for urgent work and e-mails, but it was not in my dual-screen set-up.
So finally, I relocated the extender in my room which fortunately has an ethernet socket, and placed it behind my desk and connected it with an ethernet cable to the Mac Mini, and voila, I have the high speed Internet connection I was used to.
So this tells me that the wi-fi set-up - card, software or firmware - in the Mac mini M2 Pro is screwed up, and as is obvious from all the comments here, it is a common and known problem - SO WHAT ARE YOU DOING ABOUT IT APPLE?????
I do not want to return the machine - I bought it from an official Apple reseller in our village (in the Netherlands, near Amsterdam) as I prefer to support local businesses so they do not have a genius bar, and I am guessing the "genuises" in Amsterdam will not have an answer either. I just want a fix for this isse.