Speed crash with 6x3090

[Chick3nman]

Given that you have 6x 3090, I'm guessing these cards are on x1 risers? If so, that could definitely be leading to a degradation in average speeds over time as they cause significant bottlenecking and often increase tx/rx error rates. It's also possible that you are seeing the speeds drop as the cards begin to heat up and their clocks fall.