ok first off im new here and maybe someone has had this problem and i couldnt find it.
i have a 06 dodge 115000 miles on it and it seems to be sliping from about 15mph to 35mph in that range it will rev up to 3grand then shift and i notice around there sometimes the rpm jump about 100
Anyone ever have this problem

I had "NTB" flush my fuild awhile back cant rembmer when off the top of my head but it was 80k 90k mark

as soon as it i changed my fliter and put back in 5 quarts after i cleaned the pan there was some sludge on the magnet but didnt look too bad

any ideas on what it is torque converter, solenoid, speed sensor, or am i screwed what can i do to fix it