My read is that it's at 90% because they are saturating the CPU to that point with the TPS threshold they use for comparison, the TPS of Oriole is constant and way higher than pg in these charts at least.
I'd think the CPU will drop proportionally to the TPS, they just want to show how high it can go here.
I'd think the CPU will drop proportionally to the TPS, they just want to show how high it can go here.