Do 5-10 strikes and then decrypt all the engrams at once. (If a slot like, primary weapons for example, becomes full and you cant pick up any more, dont worry cuz all the engrams you dont pick up will be at the post master when you go back to the tower) Or Play crucible. A lot of people complain about the "sweatiness" of crucible but the only way to get better at something is practice. So the more you play it, the better you will get. And if you keep getting matched with players who are insanely good, just report them for being "highly skilled" and you'll wind up in less "sweaty" matches.