i need help. Whenever i go into a match i spend about a minute on a loading screen then get kicked out and get a penalty. On the rare occasion i do get in i am on the agent select screen but with no agents. What do i do?

I'm currently rocking a 0.7, 800dpi (568 edpi) sens but I wanna drop it down to something like a 510edpi. I know that some of my gains will still be carried over, but will it be a detriment to me overall? I really wanna lower it for smoothe...