diff --git a/cpp/switchchain.cpp b/cpp/switchchain.cpp
index 6d840fc1665278004ccdb0ddb7c163f0defce46b..d46956ceedb2e54c40cc04157f92a297309c1731 100644
--- a/cpp/switchchain.cpp
+++ b/cpp/switchchain.cpp
@@ -84,7 +84,7 @@ int main() {
     outfile << '{';
     bool outputComma = false;
 
-    for (int numVertices = 2000; numVertices <= 10000; numVertices += 1000) {
+    for (int numVertices = 4000; numVertices <= 8000; numVertices += 1000) {
         for (float tau : tauValues) {
 
             DegreeSequence ds(numVertices);
@@ -118,7 +118,7 @@ int main() {
                           << numVertices << ", tau = " << tau << ". \t"
                           << std::flush;
 
-                constexpr int mixingTime = 15000;
+                constexpr int mixingTime = 20000;
                 constexpr int measureTime = 10000;
                 constexpr int measureSkip =
                     100; // Take a sample every 100 steps