Cloudflare blocking main thread on mobile

Hey guys,
I’m on Siteground hosting with Cloudflare included, and when I run speed tests for, I’m getting decent results for desktop, but terrible for mobile site. One of the issues is that Cloudflare blocks the main thread for 1.7-2 seconds.
I tried turning off the Rocket Loader, as I saw one thread with this issue, and that’s how it got resolved, but it doesn’t seem to work for me.
Any suggestions?