CloudFlare/WP Fastest Cache Conflict

Hey,

I recently started using Cloudflare CDN on my site but my GTMetrix scores have dropped/fluctuating. Also, my ad revenue has taken a hit. I have auto minify off on CF.

Should I turn Auto Minify back on CF and turn it off on WP Fastest Cache to reduce page loading times?

What would you suggest for Auto Minify: WP Fastest Cache or CF?

P.S: I visited the CF forum before and they told me to turn auto minify on with rocket loader. Seems confusing.

Plz help!