So I've tried everything and can't seem to explain it.

Ever since 4.0 I've been having weird instances where in areas with high volumes of players spawning, or NPCs rendering, the game crashes, or plays the splash screen loading screen with the spinning wheel for about 5 seconds.

It seems to happen a lot on fleet, warzones, operations, typically at the beginning of a warzone, and at the QT area on fleet. I've also had it happen mid guild ship summon, and it LOVES to happen during gharj in Eternity Vault.