Learnpress slow

Hello,

since i installed it, Learnpress is sometime excessively slow ( both in front end and in controlo panel ).

I’ve tried to uninstall unsued plugins but the problem persists.

When learnpress is slow, the rest of site works correctly.

Learnpress installed version is 3.2.8.7.

How can i solve?

Thank you in advance for your help!