diff --git a/test/python/data/HeisenbergChain_fsz/StdFace.def b/test/python/data/HeisenbergChain_fsz/StdFace.def
index 897029a4..ff41d3f1 100644
--- a/test/python/data/HeisenbergChain_fsz/StdFace.def
+++ b/test/python/data/HeisenbergChain_fsz/StdFace.def
@@ -5,8 +5,8 @@ lattice = "chain"
 J = 1.0
 h = -0.5
 Gamma = 0.6
-NSROptItrStep = 1000
-NVMCSample    = 500
+NSROptItrStep = 5000
+NVMCSample    = 200
 DSROptRedCut  = 1e-8
 DSROptStaDel  = 1e-2
 DSROptStepDt  = 3e-3
diff --git a/test/python/data/HeisenbergChain_fsz_mpi/StdFace.def b/test/python/data/HeisenbergChain_fsz_mpi/StdFace.def
index 897029a4..ff41d3f1 100644
--- a/test/python/data/HeisenbergChain_fsz_mpi/StdFace.def
+++ b/test/python/data/HeisenbergChain_fsz_mpi/StdFace.def
@@ -5,8 +5,8 @@ lattice = "chain"
 J = 1.0
 h = -0.5
 Gamma = 0.6
-NSROptItrStep = 1000
-NVMCSample    = 500
+NSROptItrStep = 5000
+NVMCSample    = 200
 DSROptRedCut  = 1e-8
 DSROptStaDel  = 1e-2
 DSROptStepDt  = 3e-3