
Site Health recommends a persistent object cache when your site crosses a size line, not when it is slow. Any one of seven counters is enough: a multisite network, more than 500 autoloaded options or 100,000 bytes of them, or 1,000 rows in the posts, comments, options, terms or users table. Revisions and media count as posts, so small sites trip it often. An object cache also needs a cache server, and a plugin alone cannot provide one. Decide first whether your traffic is the kind an object cache speeds up.
AHosting logged 65,044 AI crawler fetches in 28 days against 298 Google clicks. Most of that load costs nothing, because a cached page consumes no entry process — and most of it cannot be blocked with robots.txt either, because 72% of it is user-triggered.

Useful FFmpeg threads are capped by the video, not by your core count. At 1080p that cap is about four, so spare vCPU buys a second job rather than a bigger thread number.

The WordPress PHP version error is a pre-boot fatal, not an admin notice. Raise PHP in cPanel to clear it, but do not stop at the number in the message: WordPress enforces 7.4 and recommends 8.3 or greater.
