Sleep instead of just spin-looping

src/audio.rs

@@ -1,3 +1,5 @@
+use std::time::Duration;
+
 use anyhow::{bail, Result};
 use cpal::traits::{DeviceTrait, HostTrait, StreamTrait};
 use itertools::Itertools;
@@ -95,7 +97,7 @@ impl Audio {
         }
 
         while self.sample_sink.slots() < self.sampler.output_frames_max() * 2 {
-            std::hint::spin_loop();
+            std::thread::sleep(Duration::from_micros(500));
         }
     }
 }