Staying together with teammates all the time , placing bombs , killing enemies are not the priorities for Tac imo ...
When I play Tac , especially if its PR , at first I place spawn grenade & air turret , if it is possible , do it in 2 different areas ...
When mode comes close to end [ eg. 30secs to end ] , I leave the area , run & find myself a place in the middle of the map and keep myself ready for the next mode and I must not die while doing this [ which can cause a sudden defeat - S&D defend - ] ...
So these keep me out of action area but I dont care ...
I dont say my way is the best way , maybe not , maybe I'm wrong but this is how I play and I see that when I succeed my team does also ...