Page Speed Optimizer LCP & CLS

I have tried SEVERAL so called Page Speed tools. Some of them were very expensive! Each of the tools I've tried provided varying levels of effectiveness (from very good, to terrible). Some even broke my theme entirely. On a whim I tried this one. WOW! Our pagespeed scores have come up nicely. Not mind-blowing, but an impressive bump. We've moved from unacceptable speed levels to above average speed levels. And our Web Core Vitals are spot on now. How can something this inexpensive work so well? I haven't got a clue. But I can say this with assurance -- this app is a keeper!

It's not working even on Shopify Dawn theme...
He didn't even tried to make it work. Each consequent "fix" will decrease my store speed to around 50.
Even if the app doesn't work, they still charged me.
The first answer was a recommendation to just uninstall the app, which say a lot about their ethics.

Great app, it actually changed the scores on pagespeed. Love the instant page load feature.

After going through multiple sprints of speed optimization, I'm happy to say that this app is the best I've found. They even email you a link to verify the improvements on Google. I wish they worked with CSS too.

When you get the dreaded email from google about your site being slow, this is the tool you need. It identified which apps were causing the issues and fixed them for me. Didn't have to change my theme and anything. Just installed the app and it fixed everything.