What can I affect in terms of roundtrip times?


Of these values shown in the Chrome Inspect Waterfall (with example values in ms), what can I easily affect beyond Waiting (that very much depends on script performance), and possibly Content Download (that should be affected by the data size, network performance etc)?

Sometimes stalling and DNS Lookup take considerably more time. Usually after waiting a while. Not sure why that happens. Especially the first is odd if it’s controlled by the browser.

Queueing 0.35
Stalled 3.96
DNS Lookup 28.41
Initial connection 19.09
Request sent 0.07
Waiting (TTFB) 27.51
Content Download 3.39

Thanks in advance