Solo queue for best EXP - faster than 3 man queues!
In light of the EXP adjustments made to solo queues in 2.15, it has become much more efficient to queue solo, almost regardless of what your win ratio ends up as.
A sample size of 100 matches in a 3-man queue, with a 100% win rate, will yield about 3,000 experience. That means winning all 100 games you play.
If you do the same number of matches in solo queue and win a mere 25 out of 100, you'll gain the same amount.
With that being said, if you're able to muster up a 50% or even 60% win rate in solo queue, you'll end up with tons more EXP and marks overall.
So please, stop queuing 3 mans and collecting your relatively easy wins. You're not getting as much out of a match in the long run, and you're hindering others from a fair chance at victory. You also free up spaces in solo queues by doing this, effectively hastening matchmaking... hopefully D: