[Q] Do some regional centers' EB-5 petitions get reviewed and approved more quickly?
Not really, although generally speaking, for more established regional centers, CSC adjudicators will probably just focus on the lawful source issues.
How fast particular cases are reviewed and adjudicated really depends on the particular officer reviewing your case, not the regional center itself. Sometimes, you might get lucky and get I-526s approved even within 3 weeks, but that is a very rare exception. Most I-526s take at least 3 ~ 5 months to get adjudicated. Sometimes, your case file may get mis-routed and sit there for some time, un-adjudicated.
Therefore, any regional center which says their cases are adjudicated faster than other regional center cases -- we don't believe them. But we do believe that they may have had several I-526 cases adjudicated very quickly especially when the EB-5 lapse deadline was approaching.