We did same thing you wrote with warlock gate, but only 1 person from our 10man was not able to dodge attenuation consistently, so he was able to use gate both ways and not lose DPS. 5 people doing same seems little too much, you should practice it more.
Rule of thumb is:
If you are all standing in front of boss, including tank(we did this because it completely nullifies Exhale and DPS is not an issue), watch for which direction do rings spawn, DBM shows arrow for this.
If you have RIGHT attenuation, you dodge first line of rings, and then run to the right.
If you have LEFT attenuation, you run immediately to the left.
If you all stand stacked behind boss, i believe it turns out to be opposite of what i wrote, so go immediately on right and wait 1 on left.
Most important tip is, once you run between two lines of the rings, keep close to the inner line, even tho common sense tells you otherwise, because ring animations appears faster then actual damaging area is, so you are much more likely getting hit by the outer ring, that looks like it already passed your way. You can literally run inside rings that are coming from the middle, and as long as you dont overdo it and dont let yourself get completely overrun by them, you wont even take a dmg from them, because they are actually way behind their animation.
Sorry for my English, explaining how Attenuation works seems to be quite over my language skills