Once we enable CF on our website; we noticed uploading files (images/videos) very slow comparing to the performance when CF disabled. It was working fine but like week ago till now we are facing this issue.
You didn’t specify how you’re uploading files to your website, but if it’s with a web interface, check your browser’s console log for any possible errors. Server logs might also show something.
Also try visiting https://example.com/cdn-cgi/trace to see which datacenter you’re using. (change example.com to your own domain name). It’s possible your connection is being rerouted.