  We present calculations of the time-evolution of the driven-dissipative XYZ
model using the infinite Projected Entangled Pair Operator (iPEPO) method,
introduced by [A. Kshetrimayum, H. Weimer and R. Or\'us, Nat. Commun. 8, 1291
(2017)]. We explore the conditions under which this approach reaches a steady
state. In particular, we study the conditions where apparently converged
calculations may become unstable with increasing bond dimension of the
tensor-network ansatz. We discuss how more reliable results could be obtained.
