diff --git a/gtk3/config.h b/gtk3/config.h
index 5ad4f93..3f68e6c 100644
--- a/gtk3/config.h
+++ b/gtk3/config.h
@@ -30,7 +30,7 @@
 	EXPAND_GROUP(emulation, \
 		EXPAND_GROUP_MEMBER(boot_rom_path, string, "auto") /* overrides search location for boot ROMs by name */ \
 		EXPAND_GROUP_MEMBER(rewind_duration, integer, 10) \
-		EXPAND_GROUP_MEMBER(dmg_revision_name, string, "DMG_CPU_C") \
+		EXPAND_GROUP_MEMBER(dmg_revision_name, string, "DMG_CPU_B") \
 		EXPAND_GROUP_MEMBER(sgb_revision_name, string, "SGB2") \
 		EXPAND_GROUP_MEMBER(cgb_revision_name, string, "CPU_CGB_E") \
 		EXPAND_GROUP_MEMBER(model, string, "cgb") \
diff --git a/gtk3/main.c b/gtk3/main.c
index 84e11ae..adb9e07 100644
--- a/gtk3/main.c
+++ b/gtk3/main.c
@@ -702,7 +702,7 @@ static void init(void) {
 
 	GB_set_sample_rate(&gb, GB_audio_get_sample_rate());
 	GB_set_highpass_filter_mode(&gb, config_get_highpass_mode());
-	GB_set_interference_volume(&gb, (double) config.audio.interference_volume / 256.0);
+	GB_set_interference_volume(&gb, (double) config.audio.interference_volume / 100.0);
 
 	GB_set_log_callback(&gb, wrapped_console_log);
 	GB_set_input_callback(&gb, wrapped_console_get_sync_input);
@@ -1131,8 +1131,8 @@ void on_preferences_notify_sample_rate(PreferencesWindow *pref, const guint *sam
 
 void on_preferences_notify_interference_volume(PreferencesWindow *pref, const guint *interference_volume) {
 	if (GB_is_inited(&gb)) {
-		// wouldn’t it be nice to use the value set in the GtkAdjustment of the slider instead of 256.0 here?
-		GB_set_interference_volume(&gb, (double) *interference_volume / 256.0);
+		// wouldn’t it be nice to use the value set in the GtkAdjustment of the slider instead of 100.0 here?
+		GB_set_interference_volume(&gb, (double) *interference_volume / 100.0);
 	}
 }
 
diff --git a/gtk3/preferences_window.c b/gtk3/preferences_window.c
index 0d5cd60..4dcac96 100644
--- a/gtk3/preferences_window.c
+++ b/gtk3/preferences_window.c
@@ -67,12 +67,10 @@ static void preferences_window_init(PreferencesWindow *self) {
 	gtk_widget_init_template(GTK_WIDGET(self));
 
 	// Add a couple of "snapping points" to the sliders
-	for (signed i = -3; i < 4; i++) {
-		gtk_scale_add_mark(self->light_temperature_slider, ((double) i / 4.0) * 256.0, GTK_POS_BOTTOM, NULL);
-	}
+	gtk_scale_add_mark(self->light_temperature_slider, 0.0, GTK_POS_BOTTOM, NULL);
 
-	for (unsigned i = 1; i < 8; i++) {
-		gtk_scale_add_mark(self->interference_volume_slider, ((double) i / 8.0) * 256.0, GTK_POS_BOTTOM, NULL);
+	for (unsigned i = 1; i < 10; i++) {
+		gtk_scale_add_mark(self->interference_volume_slider, ((double) i / 10.0) * 100.0, GTK_POS_BOTTOM, NULL);
 	}
 
 	preferences_window_update_boot_rom_selector(self);
diff --git a/gtk3/resources/ui/preferences_window.ui b/gtk3/resources/ui/preferences_window.ui
index e5d0b20..3b49b4e 100644
--- a/gtk3/resources/ui/preferences_window.ui
+++ b/gtk3/resources/ui/preferences_window.ui
@@ -1042,9 +1042,9 @@ Author: Maximilian Mader
   </object>
 
   <object class="GtkAdjustment" id="volumeAdjustment">
-    <property name="upper">256</property>
+    <property name="upper">100</property>
     <property name="step_increment">1</property>
-    <property name="page_increment">8</property>
+    <property name="page_increment">10</property>
   </object>
 
   <object class="GtkAdjustment" id="colorTemperatureAdjustment">
diff --git a/gtk3/util.c b/gtk3/util.c
index 58a436e..96b4295 100644
--- a/gtk3/util.c
+++ b/gtk3/util.c
@@ -163,8 +163,8 @@ gchar* format_scale_value_pct(GtkScale *scale, gdouble value) {
 	gdouble lower = gtk_adjustment_get_lower(adj);
 	gdouble upper = gtk_adjustment_get_upper(adj);
 	gdouble range = fabs(upper - lower);
-	gdouble pct = (value / range) * 100.0;
-	return g_strdup_printf ("%.1f%% ", pct);
+	gdouble pct = ((value + fabs(lower)) / range) * 100.0;
+	return g_strdup_printf ("%.0f%% ", pct);
 }
 
 gchar* format_scale_color_temperature(GtkScale *scale, gdouble value) {
@@ -174,5 +174,5 @@ gchar* format_scale_color_temperature(GtkScale *scale, gdouble value) {
 	gdouble range = fabs(upper - lower);
 	gdouble normalized = (value + lower) / range;
 	gdouble kelvin = 12000 + normalized * (12000 - 1000);
-	return g_strdup_printf ("%.1fK ", kelvin);
+	return g_strdup_printf ("%.0fK ", kelvin);
 }