Google warning: INP Issue (too slow)

Email from Google:

Search Console has detected that your site has the following INP issue:
• INP issue: longer than 200 ms (mobile)
We highly recommend that site owners achieve good Core Web Vitals for success with Search and to ensure a great user experience generally. This, along with other page experience aspects, aligns with what our core ranking systems seek to reward.

Also Webflow itself is running slowly, taking about 75 seconds to open a page, make a quick change and save it. Sometime saving can be 50% of that time.

Any suggestions?

Same issues, wondering if anyone has any advice…