First of all, I'd like to thank the wpdiscuz team for providing this excellent plugin 🙂 

We noticed that the table wc_users_voted, which is active since 8 months, has currently 400 MB of size and is constantly growing.

Are there any possible optimizations to reduce the growth speed of this table or other ways to reduce size?

I checked the wpdiscuz settings but didn't find anything about reducing database size.

E.g. is it possible to disable voting for posts which are more than X days old?