Adding to Matt's message, starting in 2021 if BiaB requires more resources due to the added tracks, the CVP 307 required resources, and the fact that the computer's CPU is running near and at max indicates that the computer may not be powerful enough to run both simultaneously. I believe the fact that the Yamaha P45 piano works just fine supports that theory.

I'd like to know how much ram, the CPU speed, and how much room is available on her HD.

Ladybird did you disable your Ethernet card and everything running in the background like I previously suggested? If so did the CVP 307 and BiaB 2025 work OK? If you eliminate some of the CPU workload you may get both to work properly.

When you are at the checkout line and they ask if you found everything say "Why, are you hiding stuff?"

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware