  Complex Langevin simulations have been able to successfully reproduce results
from Monte Carlo methods in the region where the sign problem is mild and make
predictions when it is exponentially hard. We present here our study of the QCD
phase diagram and the boundary between the confined and deconfined phases in
the limit of heavy and dense quarks (HDQCD) for 3 different lattice volumes. We
also briefly discuss instabilities encountered in our simulations.
