WordPress problems on Azure Virtual Machine

Over the weekend I moved an existing WordPress multi-site from a Windows Server 2012, IIS, MySQL server (retiring) to an Azure, Virtual Machine server running Windows Server 2022. I have moved other PHP coded sites over the past 2 weeks and they are BLAZING fast on the new server.
When I moved WordPress, everything came to a screeching halt as the FastCGI process is using 100% of the Servers CPU. I’m not sure where to even look because in the hand coded (by me) PHP sites using FastCGI, they don’t use hardly any CPU at all but WordPress is eating 100%.
I’ve been googling for 2 days now to try and find solutions for this. I’ve tried changing multiple IIS, PHP settings. I’ve disabled all plugins, I’ve disabled CRON. I’m just at a loss for where to even look now. What could be causing the 100% CPU usage?