Speed
1)Overview
2)Optimization
a) File Size Optimization
1) Image Resizing (Business Plan)
2) Polish (Pro Plan) - I activated this option and verified "polish" option is working but there is very slight improvement that can be noticed in developer tool but there is no difference in google page insight.
3) Auto Minify (Free Plan) - Yes it compresses the files but there is no difference in google page speed.
4) Brotli (Free Plan) - Cloudflare applies Brotli compression to help speed up page load times for your visitors. Cloudflare will select Brotli compression as the preferred content encoding method if multiple compression methods are supported by the client. If the client does not indicate that Brotli compression is supported, then gzip compression will be applied.
b) Optimized Delivery
1) Automatic Platform Optimization for WordPress (Pro Plan)
2) Enhanced HTTP/2 Prioritization (Pro Plan)
3) TCP Turbo (Pro Plan) - Reduce latency and throughput with custom-tuned TCP optimizations. Enabled automatically for Pro, Business, and Enterprise customers.
4) Mirage (Pro Plan)
5) Rocket Loader (Free Plan) - Can see improvement with this in google page speed insight.
c) Caching
1) Prefetch URLs (Enterprise Plan)
d) Mobile
1) AMP Real URL (Free Plan)
2) Mobile Redirect (Free Plan)
3)Browser Insights
#) Added a page rule to cache everything. This way HTML pages will also be cached.
#) Browser cache to 8 hours