Originally Posted by GUWonder

If the French multi-entry one-year visa is not a "Circulation" visa, the maximum stay is 90 days in a one-year period. If it is a "circulation" visa, then it's as you said above.

http://www.diplomatie.gouv.fr/en/com...cker-visa-mean

Not all French visas of this sort have been "circulation" visas, which results in problems of trying to stay more than 90 days in a one-year period even if not staying more than 90 days in any 180 day period.