One possible culprit is CPU-GPU memory transfers. Have you tried encoding without burning in the subtitles? Maybe the burn-in requires a CPU transfer after decoding and then back again to encode
That's why the media should be held accountable for what they say. Which I suppose would be the case if it wasn't for the loophole of disguising news as entertainment.
The file/document integration is based on SharePoint. Shit built on top of a nice pile of manure
Edit: and don't get me started on the teams android app which requires access to all your media if you try to share a single image. If you share it as a file attachment however it's completely fine. No you're not getting access to my files and pictures MS, keep your filthy adware fingers off my data
Megalo box theme https://www.youtube.com/watch?v=4Otfjb70-EA