* Properly cache regexes in chat sanitization/accents
Wow I wonder if `new Regex()` has a cost to it *looks at server profile*.
* Avoid lag caused by Tippy command completions
CompletionHelper.PrototypeIDs explicitly says *not* to use it with EntityPrototype. Unsurprisingly, reporting a completion result for every entity prototype in the game is a *bad idea*.
* Add active count metrics to some high-load systems
Mover & NPCs
I suspect the thing that caused the Leviathan round to shit itself on performance is NPC spam in space or something. So let's verify that.
* Enable parallel processing on pow3r again
Originally disabled due to a theory of it causing bugs, it was re-enabled on Vulture, and I'm not aware of it having caused any issues there.
* Replace hashset with bitflags for AtmosMonitor alert types.
Allocating these hashsets was like 20% of the CPU of atmos, somehow.
* Cache HashSet used for space movement collider checks
Turns out this was a ton of server allocations. Huh.
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