Thanks for reporting back!

I had an AIO (all in one) water cooling on the CPU years ago. Then starting the computer, it would load up and then shut down. The pump stopped working. Touching the housing, it was hot. I replaced with an air cooler and all was well.

Even with my newer PC build, I stayed with air. I can see if the fans are spinning.

@HelgeK Curious what water cooler setup you were using on your cpu. I've been using an Asus Ryujin single-radiator aio in place of the case fan on an 11900k without a problem for about 4 years now. It notifies me of firmware updates, for which there have been many, & does temperature monitoring. I've implemented a custom pump profile that ramps up so I can hear it when I render MainConcept. If it ever fails, I'd just replace it with another one. It's interesting your problem showed up with vp23 but not vp22... suggests vp23 is using cpu where vp22 doesn't.

The new one is an ARCTIC Liquid Freezer III 360. It cools the CPU without any issues and doesn't even come close to the max temp of 90°C. This with low level sound even by rendering.
The old one was a CORSAIR Hydro Series H115i PRO. It got the job done, but the CPU temps were much higher than they are now.

@HelgeK said: "The old one was a CORSAIR Hydro Series H115i PRO."

I ran a CORSAIR Hydro Series H115 on my last system for five plus years. I policy-replaced it with the same part when I built the last system. I kept to old part as a spare in case anything happens in this machine cycle. I'll have the machine running while I order or go purchase a new replacement cooler.