I’m in a similar situation. I use 2 plex servers and Synching. Whenever I add media to my server at home, it syncs to their server. Don’t have to worry about random upload spikes.

And make sure to turn off The setting that auto plays the videos in browser if you mouse over them (don’t remember the setting’s name). Hovering your mouse over it counts as you watching/playing the video if the setting is on.