W3TC: Unknown JSS and CS file

Hello there support,

Recently I found that my website has a bit slowing down in the process and when I checked on gtmetrix.com, it appears quite a lot of .js file and each of them having high ms in the waterfall. It was suspected that these things are consuming the site speed, however, I couldn’t track the source and how these things generated on my site.

My site has W3TC installed, I searched the web these .js might be something appears from W3TC plugin, but I have all setting in the W3TC correctly set up. (from their plugin guide)

I might not so familiar with these extensions but is there anyone could advise me on this? Thank you in advanced.

https://www.book-goldenhouse.com/wp-content/cache/minify/0852b.js?x86413
https://www.book-goldenhouse.com/wp-content/cache/minify/1615d.js?x86413
https://www.book-goldenhouse.com/wp-content/cache/minify/249f0.js?x86413
https://www.book-goldenhouse.com/wp-content/cache/minify/5dfc2.css?x86413
https://www.book-goldenhouse.com/wp-content/cache/minify/63a69.js?x86413
https://www.book-goldenhouse.com/wp-content/cache/minify/6d18f.js?x86413