dude im gonna be real here: the solution to solving stalemates in 5cp is to not suck donkey dick at the game.
get your team involved in sack plays. a solo roamer bomb has like a 10% chance of making something happen. take space. pressure. get the other soldier to be a distraction and shoot rockets at the gamers. get your demo to walk forward and bait soldier bombs for free kills. ANYTHING other than saying to your roamer "alright buddy, time to die :)"
if youre running a sniper (Not Recommended because this SLows The Game Down - AKA a Stale Mate) change angles constantly. if you're spotted a good team will cover that angle and make sure you cant peek it without being blown to bits in half a second (or be pressured out n live by the skin of your teeth, forced to get healthy, etc which is SLOW and keeps the stalemate stale).
if youre counter sacking do the same shit i said in the first paragraph. stickies on process choke? get ur demo to air det the corner and clear the stickes so your roamer doesnt insta die. get your pocket to peek sewer and draw eyes and shoot rockets at em. ANYTHING other than telling your roamer "alright their roamer died now its time for you to do die too :)"
when you have mid (or enemy 2nd) the game is played at YOUR speed. if you have mid (or enemy 2nd) you do NOT get to complain about stalemates.
thank you for coming to my TED talk