trailwheel Hello,
Your site scores look good to me, I am seeing scores of 87 on desktop and mobile - where did you see a score of 53?
I would say your best bet for improving site speed would be improving the cache hit rate. Your cache hit rate's only currently 22% and a higher cache hit rate directly correlates with improved speed and core web vital performance. Are you using any caching plugins or caching at the origin server which might be preventing Ezoic's caching app working correctly? I would recommend turning any other caching off so Ezoic's caching app can work more effectively, and you should then see improvements to overall site speed.