Yep, that’s a huge nerf. I think that’s 8 seconds to charge now, which is an eternity in combat.
Update, I misinterpreted the notes. Tested in-game and confirmed that the charge-UP time is unchanged, that’s still 3 seconds to spin up and fire. The change is to the cool-DOWN, which I believe is now 15 seconds instead of the original 10 seconds. I tested on a normal temperate planet, so I don’t know how much hot and cold planets affect this if any.
I’d call this a slight nerf, but a pretty fair one considering the Quasar effectively has infinite ammo.