Continual disconnections - does this look right in any way?

I've been a customer since the Telewest/Blueyonder days and this is the first time I've had such a bad run of connectivity. I think my Hub 4 may be failing. I have checked all connections to my kit internally. I have the Hub 4 in  router mode feeding an Asus RT-AX89X which in turn connects to a the rest of my internal network via an 10Gbit SFP+ connection to a Mikrotik CRS328-24P-4S+. When a disconnection occurs, I have tested running a speed test on my Asus router (being the nearest item connected to the hub) and it times out and won't work until the hub reconnects, leading me to believe the Hub 4 is the culprit of the issues as the postcode-based checker claims there are no issues in my area (ME10 4UT).

I have seen the convention is to set up a BQM, so here's the last 24hrs on the one I set up yesterday:

Does this in any way look normal or point to the Hub 4 being the likely culprit?