[Hectic]

Yeah i was gonna say, sounds like your average we gbbr.
my 416 is the same. It will run beter on full auto when its 25-30° outside but right now at 10-20degrees itll cool down/slow down at about the 4th or 5th round on auto and by mid way semi would he faster lol.
as for the loading i load without an adapert. The mag upright, the loader at 90° and a finger over the feed lips to guide the bbs in. Just as fast as any other mag/loader combo and no need for adapers or seperate loaders. And i would venture a guess the gun is dry.
use some heavy silicone oil (grenade oil or RC shock oil) on the oring in the nozzel and use some super lube or frog lube on all the friction points (they will be easy to find after runnin a few mags in the gun) just a thin layer.