i am not sure that removing server reset (twice a day) if for something.
At the begining (when server reset was removed) everything was good, no crash no world connection lost, etc...
I tend to agree, this seems to be related to the new code not the new hardware. Initially first week or two on the new hardware server population was peaking over 420+ and no issues with zone crashes and in fact server wasn't getting rebooted for days. This appears to have come in with some new source code or dependency changes. Problem is you really don't want to roll back to the older code as you will loose everything they add, so you get kind of stuck beta testing the new code so to speak. The hope is they get it fixed sooner rather than later. I'm sure Hunter/Trev/Secrets etc are hard at work on fixing it.
One thing with EZ is that there some truly huge spells/effects on this server that don't exist on other servers so things work differently here, ie Anger V's so problems will show here where they may not show on other servers.