Merge pull request godotengine#28792 from Calinou/low-processor-mode-144hz

Tweak the default low-processor usage mode to be 144 Hz-friendly

Author: akien-mga

main/main.cpp

@@ -1027,7 +1027,7 @@ Error Main::setup(const char *execpath, int argc, char *argv[], bool p_second_ph
 	}
 
 	OS::get_singleton()->set_low_processor_usage_mode(GLOBAL_DEF("application/run/low_processor_mode", false));
-	OS::get_singleton()->set_low_processor_usage_mode_sleep_usec(GLOBAL_DEF("application/run/low_processor_mode_sleep_usec", 8000));
+	OS::get_singleton()->set_low_processor_usage_mode_sleep_usec(GLOBAL_DEF("application/run/low_processor_mode_sleep_usec", 6900)); // Roughly 144 FPS
 	ProjectSettings::get_singleton()->set_custom_property_info("application/run/low_processor_mode_sleep_usec", PropertyInfo(Variant::INT, "application/run/low_processor_mode_sleep_usec", PROPERTY_HINT_RANGE, "0,33200,1,or_greater")); // No negative numbers
 
 	Engine::get_singleton()->set_frame_delay(frame_delay);
@@ -1949,7 +1949,7 @@ bool Main::iteration() {
 		return exit;
 
 	if (OS::get_singleton()->is_in_low_processor_usage_mode() || !OS::get_singleton()->can_draw())
-		OS::get_singleton()->delay_usec(OS::get_singleton()->get_low_processor_usage_mode_sleep_usec()); //apply some delay to force idle time (results in about 60 FPS max)
+		OS::get_singleton()->delay_usec(OS::get_singleton()->get_low_processor_usage_mode_sleep_usec()); //apply some delay to force idle time
 	else {
 		uint32_t frame_delay = Engine::get_singleton()->get_frame_delay();
 		if (frame_delay)