diff --git a/sim/Propagator.cpp b/sim/Propagator.cpp
index 79b3b79..4abd97b 100644
--- a/sim/Propagator.cpp
+++ b/sim/Propagator.cpp
@@ -3,10 +3,12 @@
 
 #include "sim/RK4Solver.h"
 #include "model/Rocket.h"
+#include "utils/Logger.h"
 #include "QtRocket.h"
 
 #include <utility>
-#include <QTextStream>
+#include <chrono>
+#include <sstream>
 
 namespace sim {
 
@@ -45,8 +47,9 @@ Propagator::~Propagator()
 
 void Propagator::runUntilTerminate()
 {
+   std::chrono::steady_clock::time_point startTime = std::chrono::steady_clock::now();
+   std::chrono::steady_clock::time_point endTime;
 
-    QTextStream out(stdout);
        std::size_t j = 0;
    while(true && j < 100000)
    {
@@ -66,19 +69,19 @@ void Propagator::runUntilTerminate()
       {
          states.push_back(currentState);
       }
-      out << currentTime << ": ("
-          << currentState[0] << ", "
-          << currentState[1] << ", "
-          << currentState[2] << ", "
-          << currentState[3] << ", "
-          << currentState[4] << ", "
-          << currentState[5] << ")\n";
       if(currentState[2] < 0.0)
          break;
 
        j++;
       currentTime += timeStep;
    }
+   endTime = std::chrono::steady_clock::now();
+
+   std::stringstream duration;
+   duration << "runUntilTerminate time (microseconds): ";
+   duration << std::chrono::duration_cast<std::chrono::microseconds>(endTime - startTime).count();
+   utils::Logger::getInstance()->debug(duration.str());
+
 }
 
 double Propagator::getMass()
diff --git a/utils/Logger.cpp b/utils/Logger.cpp
index da226e9..879ac89 100644
--- a/utils/Logger.cpp
+++ b/utils/Logger.cpp
@@ -18,12 +18,6 @@ Logger* Logger::getInstance()
 Logger::Logger()
 {
    outFile.open("log.txt");
-   /*
-   error = [this](std::string_view msg) { log(msg, ERROR); };
-   warn  = [this](std::string_view msg) { log(msg, WARN); };
-   info  = [this](std::string_view msg) { log(msg, INFO); };
-   debug = [this](std::string_view msg) { log(msg, DEBUG); };
-   */
 }
 
 Logger::~Logger()
@@ -42,21 +36,21 @@ void Logger::log(std::string_view msg, const LogLevel& lvl)
          if(lvl == DEBUG)
          {
             outFile << "[DEBUG] " << msg << std::endl;
-            std::cout << "[DEBUG] " << msg << std::endl;
+             std::cout << "[DEBUG] " << msg << "\n";
          }
          [[fallthrough]];
       case INFO:
          if(lvl == INFO)
          {
             outFile << "[INFO] " << msg << std::endl;
-            std::cout << "[INFO] " << msg << std::endl;
+             std::cout << "[INFO] " << msg << "\n";
          }
          [[fallthrough]];
       case WARN:
          if(lvl == WARN)
          {
             outFile << "[WARN] " << msg << std::endl;
-            std::cout << "[WARN] " << msg << std::endl;
+             std::cout << "[WARN] " << msg << "\n";
          }
          [[fallthrough]];
       // Regardless of what level is set, ERROR is always logged, so
@@ -65,8 +59,7 @@ void Logger::log(std::string_view msg, const LogLevel& lvl)
          if(lvl == ERROR)
          {
             outFile << "[ERROR] " << msg << std::endl;
-            std::cout << "[ERROR] " << msg << std::endl;
-            std::cerr << "[ERROR] " << msg << std::endl;
+             std::cout << "[ERROR] " << msg << "\n";
          }
    }
 }
diff --git a/utils/Logger.h b/utils/Logger.h
index d716df7..c151c4e 100644
--- a/utils/Logger.h
+++ b/utils/Logger.h
@@ -4,7 +4,6 @@
 #include <fstream>
 #include <mutex>
 #include <string_view>
-//#include <functional>
 
 /**
  * @todo write docs