After effects renders Character Animator Dynamic Links VERY slowly

Faster machines can help, but it is slow. That is one reason why I personally try to do as much as possible of scenes inside CH. When I do use AE, I personally export a video clip from CH and load that into AE. If I update CH, it means I have to redo the export, which is a pain. So if I need to do lots of edits, I do use dynamic linking and wait. But it is slow, so I try to avoid it using other techniques as often as I can.