there were no changes to Crusader according to the patch notes.
However, it wouldn’t be surprising if they changed it later on. Zaibas is a good example to see what you can expect, a reduction to at best 12 hits for all skills.
Plague Doctor is the other example,where they changed the hit interval to 1 hit per second, so there are two models, one reducing the total number of hits that is acceptable for the system and one changes the interval to reduce the stress on the server.
If I was still playing this would have me worried, as they should have at least tried the change of the internet protocol before going this route. It could mean that even by changing the protocol used, such changes could not be averted to increase the stability. Or they are trying to buy time with pseudo-improvements, because the only real instance where this is taxing is GTW.
One thing that could be the problem is because most classes addressed in the patch with their hit count/-interval were lately becoming meta-classes (Krivis,Plague Doctor for example) or were meta from the beginning (Elementalist,Mergen,Pyromancer for example), meaning more players used the classes actively, increasing the total server load with the highly favorable classes and their skills used by more and more players [IMC shooting its own foot once again with balancing].
I can still see some potential skills for an upcoming change with the next big balance update [Cleric Patch], for example Double Punch on Monk (probably going to be 3 or 4 hits every second of channeling) and Breaking Wheel on Inquisitor (probably going to be changed to hit 3 times every second; the 2x hit effect could be changed into a +100% final damage boost for skills that are used in the vicinity of the Wheel).
The Dievdirbys changes are fun,though, now an uninvested Diev will no longer provide 26% Cool Down reduction to invested players. There might be a race to provide support players with more resources to increase their support capabilities.