perf: increase speed multiplier from 3.0 to 10.0

src/main.c

@@ -1014,7 +1014,7 @@ void dwn_run(void)
 
         float speed_multiplier = 1.0f;
         if (now - dwn->typing_activity_time < 500) {
-            speed_multiplier = 3.0f;
+            speed_multiplier = 10.0f;
         }
 
         dwn->ambient_phase += 0.008f * dwn->ambient_speed * speed_multiplier;