Page cache not working for root URL "/" - 2 second TTFB while "/forums/" loads in 0.2s

[zamparalar.net]

XenForo Version: 2.3
PHP Version: 8.4
Server: Apache 2.4, MariaDB, Redis
CDN: Cloudflare (Free)
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PROBLEM:
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Root URL "/" takes ~2 seconds TTFB while "/forums/" loads in ~0.2 seconds.
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Test results:
curl /forums/ → TTFB: 0.18s (pageCache working)
curl / → TTFB: 2.0s (pageCache NOT working)...

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