As a follow-up, I pulled the plug on Page Speed and went back to Cloudflare. There are just too many oddities that happen with Page Speed, one of which is members complaining about pages "jumping" on tablets and mobile devices. Page Speed loads the first banner ad on my site last, so if someone is viewing below the fold, that ad loads and pushes everything down and it's annoying. Overnight I got about 10 emails from members complaining that vBulletin told them their IP address was banned. That was the final straw and I'm going back to Cloudflare. I should also mention that I ran GTMetrix tests three different times and none of them were faster than Cloudflare; all were the same or slightly slower.
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