using only system_clock

src/FPS.cpp

@@ -2,7 +2,7 @@
 #include <QTimer>
 
 FPS::FPS() {
-	previousFrame = high_resolution_clock::now();
+	previousFrame = system_clock::now();
 	timeSinceUpdate = nanoseconds(0);
 	framesSinceUpdate = 0;
 	current = 0;
@@ -15,7 +15,7 @@ FPS::FPS() {
 
 void FPS::newFrame() {
 	framesSinceUpdate++;
-	auto thisFrame = high_resolution_clock::now();
+	auto thisFrame = system_clock::now();
 	timeSinceUpdate += thisFrame - previousFrame;
 	previousFrame = thisFrame;
 }

src/Simulation.cpp

@@ -11,7 +11,7 @@ Simulation::Simulation() {
 	QTimer::connect(timer, &QTimer::timeout, this, &Simulation::update);
 	timer->setInterval(updateInterval);
 	timer->start();
-	lastUpdate = high_resolution_clock::now();
+	lastUpdate = system_clock::now();
 };
 
 void Simulation::draw(QPainter *p, int screenSize) {
@@ -22,7 +22,7 @@ void Simulation::draw(QPainter *p, int screenSize) {
 }
 
 void Simulation::update() {
-	auto thisUpdate = high_resolution_clock::now();
+	auto thisUpdate = system_clock::now();
 	auto ms = (int)duration_cast<milliseconds>(thisUpdate - lastUpdate).count();
 	lastUpdate = thisUpdate;