Thanks for the info, Paul! That sounds encouraging. I must have been doing extra steps or something.
It varies from day to day, depending on which Psalms are used (some days are a bit longer than others), and whether the Office is Double, Semidouble, or Simple. Generally, Matins and Lauds take me about 40 minutes, Prime 10-15, Terce, Sext, and None about 5-7 each, Vespers 10-15, and Compline about 10.
Praying it a lot also helps shorten it, since the Latin starts to make more sense the more you say it, especially the Psalms, and you figure out the structure of the Office and don't waste time page-flipping. I rarely need the Ordo anymore, although transferring Lessons can get a bit tricky sometimes. The one on breviary.net is good for the pre-1962 Office; the FSSP has one for the '62 Mass and Office, and I'd guess the SSPX also does.
It does sound like you were adding all sorts of extra things to the LotH - only one set of Psalms and Lessons are said each day. In the Breviary, Pius X's reform uses the ferial Psalms almost every day, rather than those from the Common, and the Scripture Lessons in the first Nocturn are also usually ferial. I wish he had retained the Common Antiphons for Feasts of Saints, and proper ninth Lessons on Sunday, but overall, I think his reform (unlike the ones of the 1950s and later) was a good one.