I got a corolla 95 AT. If the car is parked for more than 30 minutes then start it and switch it to D, the car moves slowly, approximately 5-10 kph, then step on the gas, it revs but still stays on 5-10 kph, it doesn't accelerate.

it would take more than 5 minutes for the D gear to work/engage on a normal mode but once the D gear works, it runs smoothly even if I switch it to other gears and switch it back to D...

The problem is, if I park the car again for more than 30 minutes, D acts up again. I noticed that L and 2 are starting to have the same issue but not most of the time.

Normally, what I do is start the car and shift to D while on handbrake and wait for the D to engage. Once engaged, ayun, paaandarin ko na. Sometimes it only takes 1 minute but sometimes it takes approximately 3 to 5 minutes.

transmission gear oil is fine.