At the moment it’s not recommended to build or purchase a new PC because new AMD processors are expected to be released soon and Intel is currently facing some issues as mentioned earlier.
Puget Systems’ Perspective on Intel CPU Instability Issues | Puget Systems
The issues with crashes to desktop (CTD) potentially caused by Intel’s 13th and 14th generation processors were also mentioned by MSFS CS staff, so I won’t elaborate further.
I have an Intel i9 13900K and I don’t experience any issues with MSFS or other games.
However, currently (04.07.2024) Intel CPUs 13 and 14 gen are not recommended.
Its worth a mention that there isn’t and won’t be a flawless AMD or Intel CPU.
We can conclude the discussion about CPUs reliability as OP has purchased a new PC.
Could you please update us on whether you’ve resolved the issues and how you are finding the new PC setup for playing MSFS?