I reaaaaally don't have the time to explain why clock speed is a worthless metric when comparing between processor generations.
The lag we experienced during that event was simply because there were that many people in one system all firing missiles, CDs, mines, CMs, thousands of gunshots per second, et cetera. If we had had 110 or more people on the server but not in that condition you wouldn't have seen any lag.
And FLHook be damned, it was that bad when we had battles of that size in 4.85 and 4.86. It was honestly worse, because we had lag that bad and FLHook wasn't doing nearly as much work ensuring various things happen in the combat pipeline as it does now.