500MB asset cleanup js cache folder

In my effort to improve my site’s performance, there must be something I did incorrectly since I’m not seeing recent reviews talking about this. I hope you can advise what it was.

My zipped backup file was around 50MB 3 weeks ago, then it became 60MB around last week. That’s normal I guess. What I remember doing anything significant on afterwards is optimizing my SEO settings using Rank Math plugin. Other than that, I don’t have a lead of how my full backup zip file is now about 180MB, only in a matter of a week. That’s triple the size it was before. For comparison, my unzipped wp-content/cache/asset-cleanup/js file is 531MB and the total size of my unzipped backup file is 934MB (Size on disk).

If you scan my site using Lighthouse, there is always one render-blocking js file and a few more down the list.

This might be a different matter but should I disable ‘combine’ js and css files since that’ll interfere with HTTP/2? I have minify disabled on asset cleanup and W3TC, and only uses Cloudflare’s.

Please advise how I should remove the unnecessary cache files and make sure they don’t recreate and reappear on site performance checks.

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