Afk 2 times in 3 months

I have had to leave a game one time, came back and we as a team ended up winning, the second time my computer crashed...and i get punished with a lower Que for the next 5 games? in the past few months 2-3 that is the only times, and these were a few weeks apart...

i understand why it is there but it feels a little excessive... can the game tell whether it is from a sudden loss of internet or computer problems?