Media Encoder randomly exports glitched/bad frames
When queueing a 4K30 timeline from Premiere into Media Encoder and exporting to H.265, random frames will display this pink/orange/purple vertical striped pattern in the exported file. This is not visible when editing nor is it in the source footage (ProRes Proxy 4K60 footage in multicam sequences).
This did not seem to occur when exporting 4K60 H.265, only when using 4K60 source footage in a completely 4K30 timeline. This glitching occurred when Media Encoder actually successfully exported the file because many times, AME would display "Accelerated Renderer Error" until media from that sequence was copied into a new one and exported the same way.
I only noticed this when using PP 14.3 and AME 14.3, so this may be a relatively new thing.