Had a similar issue on a gig yesterday, compressing prores 422 (LT) sources to h.264 we would get pink glitches and video skips on the exports.
Our solution ended up being an old school solution. In adobe media encoder, in the queue section, at the bottom, make sure the Renderer is “Mercury Playback Engine Software Only”. I don’t know where you can change this setting if you are exporting directly out of premiere though.
This fixed our problem, good luck!