At first I also had repeated disconnections. I then checked the connection quality via the router login (192.168.1.1). The values were pretty bad. I then moved the router to where I get the best connection and have had a stable connection ever since.
I used the following report as a guide:
https://www.fts-hennig.ch/antennen...

I'm guessing ISP or network overload, mine doesn't seem to be disconnected.

It's really strange, here as well: Works without problems for only a few months (Yallo on Sunrise network), now hardly any connection possible. Signal 75% firmware the latest and newest ISP file. I'm ordering another router to make sure it's not the TP-Link Archer MR600 router.

I experienced the same behaviour with two different ISPs, Salt and Yallo (Sunrise).
In addition, the interruptions usually occurred at the same time in the morning, between 03h00 and 06h00, as if some kind of maintenance work might be taking place at that time. For some time now, I have not been able to detect any more interruptions, although I have not changed anything at the location.

I also have this problem but with Swisscom. I recently had to restart the router every morning.

I've had the same problem for two days. It's been running smoothly for 2 months and now the internet connection is 1 min off and then 1 min on again. So it's currently unusable. The latest firmware is installed and reception is also fine. Does anyone have an idea what the problem could be?