Windows 11 hurts AMD Ryzen performance even more than we thought

We knew Windows 11 hampered AMD's CPU performance, but third-party tests show much worse results.

Windows 11 might have just had its Chernobyl moment. AMD and Microsoft already confirmed that the new operating system increases L3 cache latency by 3x on Ryzen CPUs, but it can actually be as much as 6x slower, according to independent testing. Cache latency can affect performance in many applications, including games.