doubt it, i don't think win11 changed that much by its core. only cosmetic. if there is a performance problem they will fix it in stable releases... don't need to worry much
Performance was much worse on my Westemere-EX VM, but if they are compiling for newer CPUs, this might be expected.
Looking around on YouTube and whatnot, it seems that Ryzen CPU's are the only ones affected by this issue so far. Hopefully something Microsoft will fix before launch.
We'll end up having to ask AMD to once again contact Microsoft to fix issues because of their (MS) weird changes.
I'd be surprised if AMD wouldn't be aware of their own CPUs performing badly on a new OS. It would be a bad W11 launch if it released with the lower performance on Ryzen; tech sites and blogs would go wild with it. On the other hand, I doubt it would do much to affect W11's adoption (W10 is doing well after all).
Atm I haven't noticed absolutely any changes, I have a Ryzen 3600 and in gaming it is the same or a little better than with Win 10. Also don't forget that its a beta OS, the real tests come when it is already a product released to the general public.
Using all Intel systems here and no problems with L3 speeds or anything . Im guessing its a AMD thing?
Will an update to AMD chipset drivers fix any of this or is this something on Microsoft's end that they broke?
I don't think the chipset has anything to do with the performance of the cpu specifically. I think it's a more fundamental issue with the processor handling. You could try finding beta chipset drivers, but I wouldn't expect them to do anything for you. They don't do anything in Windows 10. Most of them are just null drivers to satisfy the device manager.
AMD Ryzen 9 5950X CPU Results: Windows 11 Windows 10 Same computer same HD's. Big difference in L3 Speeds
A side effect of this bug is lower CPU performance on other AIDA64 benchmarks as well. (Special attention to CPU AES, CPU ZLib) I no longer have Windows 11 installed but I do remember seeing low performance (even with an overclock). Maybe Robr can shed a light on that! I may run some benchmarks and spread the word on Reddit or even /r/AMD