If you are gonna queue with 2 or more friends pls make sure 1 of you is the jg.
I was not caring much for dynamic queue until i get jungle and i have constatly 4 people of the enemy team invading me and my team is far beyond too slow to react. I tell them if you're gonna put the dynamic queue to use at least back each other up since i'm all alone and can't do much on my own. Their response "well we are top mid and bot how do you expect us to back each other up ? " and here i am fight top mid their support and jg on my jg territory watching them take everything and diving my team under towers. [zombie-brand-clap] at least work together guys if you're gonna queue together.
and play under the assumption you will get invaded.
gives you an insane amount of wards so you could be safe as long as you keep an eye on the minimap.