Premiere Stalls Partway Through a Long Export

Short videos export. A one-hour video reaches about two thirds and the progress bar stops. RAM stays high, the CPU drops, and Premiere never finishes. A new GPU is the change that lines up with the failure. The hour-long file is just the first job long enough to hit it.

See whether it is one spot or the whole machine

Nest the sequence. Cut the nest in half. Export each half with software encoding. If both halves finish, the hardware encoder is failing on the long job and the timeline is fine. Export the hour with software encoding and leave the new GPU’s encoder for shorter files until a driver update says otherwise.

If one half stalls, split that half again. You are looking for a clip or an effect the encoder cannot pass. A stall at a similar percentage every time, on either half, points back at the encoder and the driver, not at one frame.

The RAM number is a symptom

Memory climbing while the progress bar is frozen means the process is stuck, not that the hour needs more RAM. Closing other apps will not get the bar moving. Update the GPU driver, set the project renderer to software in Project Settings, and export with software encoding. The card can still drive the screens. It does not have to compress the master.