Coming to stop sign by putting break gear slips then return to park move to drive runs. second as i drive in curves slips but as give gas enough continues running.

Sputtering is usually a sign of having a fuel issue. You need to hook a fuel pressure gauge to the fuel rail and confirm that you have at least 40# of pressure at the rail.

that is a hum dinger, largest ever posted, in one shot.
very good.!
one word , the transmission slips. (never drive a slipping tranny)
overheat indicator.! that is key.
many newer cars will change the transmission shifting any time
the engine over heats.
and overheat wins over transmission , every time.
if the engine burns up, what good is any transmission.? nada.

solve overheat first.

slip or flare.
is when the engine RPM rises fast and the car dont go faster.
SLIPS.
and slipping burns up trannyclutchs and increases the damage. inside the transmission, dont do that. dont allow it,
park it and fix it.

on some tranny there is a temperature sensor that the TCM
watches and changes shift patterns based on AFT fluid temps.
and if the ATF fluid gets too hot , it takes actions. to keep the tranny from harm.

why not get a scan too and see what DTC errors there are..
DTC, engine overheate.
DTC< tranny overheat (caused by above)

check you MAP sensor.

dirty throttle body, check air filter.

SOUNDS LIKE FRONT PUMP TOOK A ******* HAVE PRESSURES CHECKED AT ****** SHOP GOOD LUCK

Sorry I don't know en ought on these

The fluid may be low enough to cause the slippage after coming to a quick stop and then taking off again . Have it checked

sounds like you are low on fluid if not then it's time for AAMCO to take a look

Have u tried a tranny sevice? The fluid and seal r bad it is exspanind as it heats! Try a tranny service i reccomend every 60,000 miles!

it could be a few things bent shifting fork or first gear is out reverse runs off an idler that is conected to first gear.