Oh my... you'd need a PoD far before the revolutions in order to accomplish a Tsarist Russia in the long-term after WW1. Or even a 'reestablished' Tsarist regime thereafter. The entirety of Russian history and social order is almost a prescription for radical socialism; you'd need to look at Russian history, the roots of Communism/Bolshevism/Marxism, and the events leading up to the 20th century to really get a good solid understanding of the question which you are asking.
Perhaps if Tsar Alexander II was not assassinated in 1881 (that is, that he survives that particular attempt and any that might follow it - he was a popular target of assassins, after all) and he was thus able to establish a workable Duma.
The reason the first two Dumas failed so quickly and irrevocably was due to the fact they were filled with those who were terribly angry at the Tsarist regime after the humiliation of the Russo-Japanese War (among other things) and the marginal success of the Third Duma (considered the only real working one since it was the only which served its full 5-year term) was undermined by the complete failures of the first two.
Now, say Alexander II was able to pass that legislation and force it down the nobility's collective throat (when he was assassinated, Alexander III walked in and ripped it up) thereby allowing for an earlier attempt at successful democratic institutions (though don't call it Parliament, because Russians didn't think much of the parliamentary system at the time) then MAYBE they could avoid 1) Russo-Japanese humiliation, 2) disasterous WW1, and 3) Red Revolution.
MAYBE - MAYBE - MAYBE avoiding some of them to some degree, but who knows if they'd avoid all three to any great extent.