Problem with crawling pages

Hello, I have a problem on my site and I need some help with the crawler setup.
1) Every time a new crawler is started, it seems like the cache of the whole site is deleted and the site is slow for the duration of the crawler and then loads quickly again when the crawler finishes. It can’t be the server.
2) I would need to set the crawler to start every day at night from 0:00.
3) I use Smush Pro plugin to optimize images and I would need to get the webp format of the images to the web. I have enabled the function to replace .jpg and .png images in the litespeed cache, I also have 2 versions of the site in the crawler with and without the webp image format.

Thank you very much for the advice and can I send the LTS cache plugin settings.

The page I need help with: [log in to see the link]