During a stream by Dandy, I saw accelerated battle animations. I found a way to defend the first Castle on the Lord of the Rings 4.0 map, but without accelerated animation, I won't make it before retirement. Searching didn't help; I couldn't find an executable with fast animations myself. If anyone has one, please share it.
You can download it at this link (the author's GitHub page).
UPD
There is a topic about this plugin on the forum: SoD_SP Plugin