- For I_GetInputFrac(), just have the caller check if input is synchronised.

source/common/utility/i_time.cpp

@@ -210,17 +210,12 @@ void I_ResetFrameTime()
 	FirstFrameStartTime += (CurrentFrameStartTime - ft);
 }
 
-double I_GetInputFrac(bool const synchronised)
+double I_GetInputFrac()
 {
-	if (!synchronised)
-	{
-		const double now = I_msTimeF();
-		const double result = (now - lastinputtime) * GameTicRate * (1. / 1000.);
-		lastinputtime = now;
-		return result;
-	}
-
-	return 1;
+	const double now = I_msTimeF();
+	const double result = (now - lastinputtime) * GameTicRate * (1. / 1000.);
+	lastinputtime = now;
+	return result;
 }
 
 void I_ResetInputTime()

source/common/utility/i_time.h

@@ -42,7 +42,7 @@ uint64_t I_nsTime();
 void I_ResetFrameTime();
 
 // Return a decimal fraction to scale input operations at framerate
-double I_GetInputFrac(bool const synchronised);
+double I_GetInputFrac();
 
 // Reset the last input check to after a lengthy operation
 void I_ResetInputTime();

source/core/mainloop.cpp

@@ -565,7 +565,7 @@ void TryRunTics (void)
 	oldentertics = entertic;
 
 	// update the scale factor for unsynchronised input here.
-	inputScale = I_GetInputFrac(SyncInput());
+	inputScale = !SyncInput() ? I_GetInputFrac() : 1.;
 
 	// get available tics
 	NetUpdate ();