Aussie Steve testing a popular viewers request. He wasn't certain how to describe the video but it is basically - how far can you take the min max build strategy before it stops making sense. He tests the 5600 with a 4080 vs some other configs. Conclusion is obvious: It holds back the 4080 and can introduce frame pacing issues. His being a good fortnite player, he discusses how it holds back his abilities by not providing high enough or smooth enough fps.
You could get a bit more out of the 5600 by tuning it, but it isn't going to be enough to change the results. The bar graphs hide the experience a bit too as he points out in his conclusion. They make things look better than they really are.
Bummed he didn't include the 5800X3D with the 4080. Even the 5600X3D which someone sent him, would have been somewhat illuminating.