From 15-18 I was around Everdusk switching between solo/duo/trio. I must say my exp speed doubled, or even trippled when I have 1-2 other people with me

And adds become really easy to deal with.
Killling 1 mob jumped from 30sec-1min down to like.... 10 seconds.
Something you really should start looking for, a duo partner.
Everyone seem to be very active to get group after 14 for me. It was quite hard before that.
I don't do +2 level mobs. Usually stick to +1 at most. Once I started doing missive, I don't even mind sticking to -2 -3 etc because they're so easy to kill at that point.
Surprisingly we were level 17 when trio-ing 3 dots level 20 mobs. And we were rushing through them with ease. It was a blast. We even took down a 4 dot around there
