diff --git a/Project.toml b/Project.toml
index 3ff781a..a29f2e5 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "QuantitativeSusceptibilityMappingTGV"
 uuid = "bd393529-335a-4aed-902f-5de61cc7ff49"
 authors = ["Korbinian Eckstein korbinian90@gmail.com"]
-version = "0.5.0"
+version = "0.6.0"
 
 [deps]
 FFTW = "7a1cc6ca-52ef-59f5-83cd-3a7055c09341"
diff --git a/src/tgv.jl b/src/tgv.jl
index a14bb95..084feb1 100644
--- a/src/tgv.jl
+++ b/src/tgv.jl
@@ -107,10 +107,10 @@ end
 
 function get_default_iterations(res, step_size)
     # Heuristic formula
-    it = 2000 # default for res=[1,1,1]
+    it = 3200 # default for res=[1,1,1]
     min_iterations = 1000 # even low res data needs at least 1000 iterations
-    it = max(min_iterations, it / prod(res)^0.8)
-    it /= step_size^0.6
+    it = max(min_iterations, it / prod(res)^0.42)
+    it /= step_size^0.6 # increasing the step size reduces the required iterations
     return round(Int, it)
 end