H.265 4K60 exports randomly fail imported from Premiere; copying media to a new sequence temporarily fixes
When a 4K60 (or even 4K30) sequence is queued in H.265 from Premiere, Media Encoder often fails with the error "Error compiling movie" and "Accelerated Renderer Error." Software rendering has no effect. Sequence is composed of multicam sequences with ProRes Proxy source footage at 4K60.
Memory usage skyrockets and CPU/GPU usage drops shortly before failing and does so at random timecodes. Often times, copying the media from one sequence to a new sequence and queueing that sequence instead with no changes made to it since copying will allow Media Encoder to export that sequence only once before having to copy to a new sequence again.