Getting a 524 Error - What's Causing It and How Can I Fix It? or Why Am I Seeing a 524 Error and How

Not an expert but had this last month. My fix? Increased PHP memory limit in wp-config.php.

Sounds dumb but it worked. Also, check if your host has server-side caching—some cheap hosts throttle resources hard.

Cloudflare’s status page (https://www.cloudflarestatus.com/) can rule out if it’s on their end too.