Im a DNC main if not obvious already, tonight was melding and got too wondering, Is there a point where stacking Crit is no longer viable?

Im at 1866 with all but one jewelry part filled with CritX materia (The one is a DHX due to not allowing for further crit)

So yeah, is there a point where crit isnt viable anymore for stacking? (If that is even achievable atm)