Fix: lots of various fixes

src/engine/audio.rs

@@ -443,8 +443,11 @@ pub fn build_stream(
             &stream_config,
             move |data: &mut [f32], _| {
                 if !rt_set {
-                    super::realtime::set_realtime_priority();
+                    let ok = super::realtime::set_realtime_priority();
                     rt_set = true;
+                    if !ok {
+                        super::realtime::warn_no_rt("audio");
+                    }
                 }
 
                 let buffer_samples = data.len() / channels;