DreamHost's Apache servers and custom PHP setup create specific WordPress bottlenecks. 5 fixes that actually help.
Root Cause
DreamHost uses Apache (not Nginx or LiteSpeed), which is significantly slower at serving concurrent WordPress requests. Their custom PHP-FPM configuration also has lower worker limits than competitors, causing request queuing under moderate traffic. TTFB on DreamHost shared plans typically runs 400–900ms.
Ordered from quickest win to most involved. Try them in sequence.
In the DreamHost panel, go to Websites → your domain → PHP → Enable OPcache. This pre-compiles PHP files and keeps them in memory — reducing PHP execution time by 20–40%. It's not enabled by default on older accounts.
DreamHost VPS plans allow switching to Nginx via the panel. Nginx handles WordPress significantly better than Apache under concurrent load. If you're on shared hosting, this isn't available — it's a VPS feature only.
WP Super Cache was built by Automattic (WordPress's parent company) and works well with DreamHost's Apache setup. Enable "Simple" mode with mod_rewrite for fastest file serving. This bypasses PHP entirely for cached pages, dramatically reducing TTFB for returning visitors.
DreamPress is DreamHost's managed WordPress tier — it uses Nginx, a built-in caching layer, and better resource allocation. It starts at $16.95/mo and removes the worst shared-server bottlenecks. Note: it's significantly more expensive than shared but performs much better.
Enable Cloudflare (free plan) for your DreamHost domain. Configure Browser TTL to 1 year for static assets. Cloudflare's edge cache absorbs the majority of requests, meaning DreamHost's Apache servers only process uncached or dynamic requests.
If none of these work…
DreamHost's Apache-based shared infrastructure has a lower ceiling than Nginx or LiteSpeed competitors. If switching to OPcache + caching plugin doesn't bring TTFB below 400ms, the server itself is the bottleneck.
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Object caching on every plan. No plugin configuration required.
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