I also use wp rocket for my site and it loads very fast. I think you need to sign up for cloudflare and make use of thier fast servers. It works very will with the wp rocket plugin.
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This reply was modified 5 years, 10 months ago by Yui. Reason: link removed
You could make it 2400×800
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This reply was modified 5 years, 10 months ago by Yui. Reason: link removed
