Laravel Nova API calls executing synchronously 30 seconds apart

Laravel Nova works fine on my local machine, but in production Nova API calls are being executed synchronously 30 seconds apart. We are hosting in GCP using Apache and php-fpm.

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I've tried a number of different things to no avail:

• Disabling cache (when I bring up the page for the first time, it loads fine so I thought it might be a caching issue)
• Increasing php.ini settings (e.g., memory_limit, max_execution_time, etc.)
• Increasing php-fpm pool settings (e.g., pm, pm.max_children, pm.start_servers, etc.)