Cooler Master AIO - how do I know if it is working?

Purchased this the other day for a new office build. I am NOT AT ALL into the lighting scheme thing, but the price was pretty good.

Build is as follows:
Corsair 400C
Asus Prime x-470 Pro mobo
Ryzen 2700X
Cooler Master AIO
2 x GTX 980 Ti (top one has own AIO liquid cooler)

Took quite a while to get everything installed. Temps on CPU were in 30s with both case doors off. Back door only on - 40s and 50s. Both doors on the temps skyrocket.

Everything I've read says temps should be in 30s or 40s (consistently).

I've checked the fan installs. One fan blowing in from front. CPU AIO blowing out the top, GPU AIO blowing out the back.

Fans all working, lights all on, everything seems to be working, but coolling isn't really happening.

What are you using to measure your temps? I use hwmonitor, however temps can vary per board and or measuring tool.

Define "skyrocket." 60-70? 70-80? 90-100?

How many fans? How many intake how many exhaust?

Is it a 120/140/240/280/360/420 aio?

Is your aio in the front for intake, or up top as exhaust?

I had a 120mm aio on a 2700x and my temps peaked around 60-70. This was using an ITX case with the aio set as intake.

I was using HW Monitor as well. The pic I posted was from AMD Ryzen Master.

I was busy installing updates and generally getting PC as I wanted it when I noticed that HWMonitor had CPU Temp at 100C. Took off both doors and everything cooled down. Powered down and inspected all connections. Restarted with doors off to see what happened. Temps were steady in 30s with both doors off. Put back door on again and temps jumped to 40s and 50s.

Only one intake, the default large one in front.

240 AIO, set up to exhaust out the top. If I put my hand on top of the PC I can feel a tiny bit of air flow. I even looked at the radiator to make sure there wansn't a plastic cover on it that I neglected to remove.

I've got other AIOs and they will ramp up the fan speed when utilization increases. These just kept toodling along at a very pedestrian rate. I'll have to play around in the BIOS to see if I can turn up the fans - there are no controls on the AIO.

This is what I'm seeing now:

Personally I'd add at least 2 more intake fans. That front is rather restrictive and airflow won't come in as fast as its exhausting.

Are your 2 fans split off the CPU fan header?

Does the AIO pump have a dedicated power cable or does it just run off your CPU fan header? If the latter, get into the BIOS and ensure that the CPU fan is set to blow full power all the time. I've seen situations like this where an AIO pump is being undervolted by the CPU fan header and will "work" until a load is put on it.

I ask because that ~1100RPM being reported by your CPU header in HWMonitor is very low for an Asetek pump.