[Confirmação pendente] Optimizing wp_icl_translate.

The wp_icl_translate table is currently occupying 17GB of space. I've attempted to optimize it using the Optimize feature on the Troubleshooting page, but the process fails with a "Failed to fetch" error after running for a while.
Two questions:

1. Is 17GB a normal size for this table?
2. What alternative methods can I use to reduce its size outside of the built-in optimize feature?