Car doesn’t move until high RPMS.

I'd recomend everyone do this, especially if you question where full is on your tranny stick...

I had an issue with mine a while back where it began puking fluid after a fluid change.

Pull the pan. Leave the stick in. Put the gasket on and lay a straight edge across the pan surface. That's fulll. Check it against the full line on your stick. Mine was seriously overfilling the transmission, thus why it was puking fluid.
Had that happen to me before.