Hardware Unboxed has conducted a 40+ game test that shows Zen 4 and Zen 5 were being held back in many games by the current Windows Scheduler. Some games, such as Fornite in the image above, showed over 30% improvement on Zen 5, though Zen 4 improvements were also substantial. These results were not limited to e-sport games as many more modern games such as The Callisto Protocol, F1 20224, and Homeworld 3 also had substantial improvements.
Check out the video below and make sure you subscribe to Hardware Unboxed as this testing was not easy for them to do.