Don't reduce refresh rate by default in balanced mode

app/src/main/java/com/limelight/Game.java

@@ -719,6 +719,12 @@ public class Game extends Activity implements SurfaceHolder.Callback,
         return false;
     }
 
+    private boolean mayReduceRefreshRate() {
+        return prefConfig.framePacing == PreferenceConfiguration.FRAME_PACING_CAP_FPS ||
+                prefConfig.framePacing == PreferenceConfiguration.FRAME_PACING_MAX_SMOOTHNESS ||
+                (prefConfig.framePacing == PreferenceConfiguration.FRAME_PACING_BALANCED && prefConfig.reduceRefreshRate);
+    }
+
     private float prepareDisplayForRendering() {
         Display display = getWindowManager().getDefaultDisplay();
         WindowManager.LayoutParams windowLayoutParams = getWindow().getAttributes();
@@ -763,8 +769,7 @@ public class Game extends Activity implements SurfaceHolder.Callback,
                     continue;
                 }
 
-                if (prefConfig.framePacing != PreferenceConfiguration.FRAME_PACING_MIN_LATENCY &&
+                if (mayReduceRefreshRate() && refreshRateIsEqual && !isRefreshRateEqualMatch(candidate.getRefreshRate())) {
-                        refreshRateIsEqual && !isRefreshRateEqualMatch(candidate.getRefreshRate())) {
                     // If we had an equal refresh rate and this one is not, skip it. In min latency
                     // mode, we want to always prefer the highest frame rate even though it may cause
                     // microstuttering.
@@ -778,9 +783,9 @@ public class Game extends Activity implements SurfaceHolder.Callback,
                     }
 
                     // We don't want ever reduce our refresh rate unless we found an exact
-                    // match and we're not in min latency mode.
+                    // match and refresh rate reduction is allowed by user preferences
                     if (refreshRateReduced) {
-                        if (prefConfig.framePacing == PreferenceConfiguration.FRAME_PACING_MIN_LATENCY) {
+                        if (!mayReduceRefreshRate()) {
                             continue;
                         }
                         else if (!isRefreshRateEqualMatch(candidate.getRefreshRate())) {

app/src/main/java/com/limelight/preferences/PreferenceConfiguration.java

@@ -46,6 +46,7 @@ public class PreferenceConfiguration {
     private static final String FRAME_PACING_PREF_STRING = "frame_pacing";
     private static final String ABSOLUTE_MOUSE_MODE_PREF_STRING = "checkbox_absolute_mouse_mode";
     private static final String ENABLE_AUDIO_FX_PREF_STRING = "checkbox_enable_audiofx";
+    private static final String REDUCE_REFRESH_RATE_PREF_STRING = "checkbox_reduce_refresh_rate";
 
     static final String DEFAULT_RESOLUTION = "1280x720";
     static final String DEFAULT_FPS = "60";
@@ -77,6 +78,7 @@ public class PreferenceConfiguration {
     private static final String DEFAULT_FRAME_PACING = "latency";
     private static final boolean DEFAULT_ABSOLUTE_MOUSE_MODE = false;
     private static final boolean DEFAULT_ENABLE_AUDIO_FX = false;
+    private static final boolean DEFAULT_REDUCE_REFRESH_RATE = false;
 
     public static final int FORCE_H265_ON = -1;
     public static final int AUTOSELECT_H265 = 0;
@@ -120,6 +122,7 @@ public class PreferenceConfiguration {
     public int framePacing;
     public boolean absoluteMouseMode;
     public boolean enableAudioFx;
+    public boolean reduceRefreshRate;
 
     public static boolean isNativeResolution(int width, int height) {
         // It's not a native resolution if it matches an existing resolution option
@@ -475,6 +478,7 @@ public class PreferenceConfiguration {
         config.enableLatencyToast = prefs.getBoolean(LATENCY_TOAST_PREF_STRING, DEFAULT_LATENCY_TOAST);
         config.absoluteMouseMode = prefs.getBoolean(ABSOLUTE_MOUSE_MODE_PREF_STRING, DEFAULT_ABSOLUTE_MOUSE_MODE);
         config.enableAudioFx = prefs.getBoolean(ENABLE_AUDIO_FX_PREF_STRING, DEFAULT_ENABLE_AUDIO_FX);
+        config.reduceRefreshRate = prefs.getBoolean(REDUCE_REFRESH_RATE_PREF_STRING, DEFAULT_REDUCE_REFRESH_RATE);
 
         return config;
     }

app/src/main/res/values/strings.xml

@@ -216,6 +216,8 @@
     <string name="category_advanced_settings">Advanced Settings</string>
     <string name="title_unlock_fps">Unlock all possible frame rates</string>
     <string name="summary_unlock_fps">Streaming at 90 or 120 FPS may reduce latency on high-end devices but can cause lag or instability on devices that can\'t support it</string>
+    <string name="title_checkbox_reduce_refresh_rate">Allow refresh rate reduction</string>
+    <string name="summary_checkbox_reduce_refresh_rate">Lower display refresh rates can save power at the expense of some additional video latency</string>
     <string name="title_checkbox_disable_warnings">Disable warning messages</string>
     <string name="summary_checkbox_disable_warnings">Disable on-screen connection warning messages while streaming</string>
     <string name="title_disable_frame_drop">Never drop frames</string>

app/src/main/res/xml/preferences.xml

@@ -189,6 +189,11 @@
             android:title="@string/title_unlock_fps"
             android:summary="@string/summary_unlock_fps"
             android:defaultValue="false" />
+        <CheckBoxPreference
+            android:key="checkbox_reduce_refresh_rate"
+            android:title="@string/title_checkbox_reduce_refresh_rate"
+            android:summary="@string/summary_checkbox_reduce_refresh_rate"
+            android:defaultValue="false" />
         <CheckBoxPreference
             android:key="checkbox_disable_warnings"
             android:title="@string/title_checkbox_disable_warnings"