i can't say anything about the juicy parts, like the seals, or the oil or whatever inside the tranny...

but when you were moving from a dead stop in test 2, the RPMs went up and the car wasn't moving much, that sounds like a mismatch in internal conversation - there are bunch of sensors that measure the wheel speed, the tranny speed, the engine speed and then, they tell the ECU/DME/EGS what gear to select...

any other symptoms? have you had your speedometer needle die on you? have seen "trifeca" lights going off on the dash, the brake, the DSC lights?

what kind of software do you have? you have a cable already, right?