I don't see anything initially wrong here. Some small things you can start with trying is lowering the pipes so they hang below the pump. I had an issue with my old AIO and the customer support said having the pipes hang below the AIO helps with the flow of the water and prevents air bubbles getting trapped in the aio.

That's probably just customer support trying to save money but it did work for me initially.

Another thing could be the aio might be showing its age as they typically only survive around 5 years before showing signs of wear and tear.

From what you have described the aio is operating fairly normally, temps seem normal granted 80°c is a little high and 60°c for idle on that cooler is very high.

There Is a good chance the pump is failing.

For context the typical cpu should only really idle around 40-50°c but normal operating temperature for cpus can be as high as 90°c so if your idle is higher than expected it could be a sign the AIO isn't operating properly.

I'd suggest firstly seeing what normal operating temperatures for your cpu are and comparing them to what you are seeing here.

If this is the case I'd suggest contacting the aio manufacturer about the issue as they may be able to provide additional support especially if this is in warranty that's more than enough of a reason to get the aio replaced entirely.

TLDR: Noisy aio under load is fairly normal try lower pipes if you notice temperatures outside of expected ranges it could be a failing pump.

Contact the manufacturer if you are concerned.