  We study long-range interacting electrons on the triangular lattice using
mixed quantum/classical simulations going beyond the usual classical
descriptions of the lattice Coulomb fluid. Our results in the strong
interaction limit indicate that the emergence and proliferation of quantum
defects governs the low-temperature dynamics of this strongly frustrated
system, in a way that crucially depends on the degree of anisotropy of the
electronic structure. The present theoretical findings explain the
phenomenology observed in the $\theta$-ET$_2$X charge ordering materials as
they fall out of equilibrium. The approach devised here can be easily
generalized to address other systems where charge frustration is lifted by
quantum fluctuations.
