Save slowly and stocked with Polylang

I found it’s slowly to save in Elementor editor while Polylang activated.
The loading bar (green line) runs slowly and finally stocked in the end. It’s actually have saved .. if I wait enough seconds, but this become undependable and diffcult to operate.

I’ve tested the save speed when turning off Polylang and it works well.
Since Polylang did not update recently, I think the problem is caused by Elementor.
Would you fix this? Thank you.