If you consider performance important, you really should use one of the many caching plugins to do page caching. Some good candidates to complement Autoptimize that way are e.g. Booster pack, ’s Cache Enabler, Super Cache or if you use Cloudflare Cloudflare Super Page Cache.
We provide great Pro Support and Web Performance Optimization services, check out our offering on ://accelera.autoptimize.com/!
(Speed-surfing image under creative commons LL Twistiti)