When using the armor swap hotkeys, if you time it as the ability duration ends, you can skip the cooldown.
For example, the silva revive on auric tesla or the gem respawn cooldown on gem tech.
As for the specifics of the conditions this occurred under:
Multiplayer - no
Windows 11
Yes, 32 gb of ddr5 ram
Attached is a clip where it happens
https://youtu.be/zfa5mHy6bZA?si=PZRtYKNnWETIgiai
I will not do boss rush or aew until infernum