Tearcell, 
Was getting fed up with path finding performance in #Godot4 ... Just 5 mobs were tanking performance! 75 fps to 7 or less.
Then I realized my nav mesh was very not well optimized...
Then I realized I had Limbo AI querying the navigation server something like 200 times a frame for each unit...
Then I realized... I have a lot to learn yet about 3D!
Definitely gotta do some write ups on my experiences once I get back to 60 fps. I'm pretty steady at 30 again, with 30 agents active.