From 8a2d65d0ec95c1a3a04b3f75a76fce5e01b94b61 Mon Sep 17 00:00:00 2001
From: Clownacy <Clownacy@users.noreply.github.com>
Date: Fri, 15 Sep 2023 14:06:23 +0100
Subject: [PATCH] Add a sound driver optimisation.

---
 s2.sounddriver.asm | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/s2.sounddriver.asm b/s2.sounddriver.asm
index d181c5d3..40de5fe1 100644
--- a/s2.sounddriver.asm
+++ b/s2.sounddriver.asm
@@ -2628,8 +2628,12 @@ zSlowDownMusic:
 	ld	a,(zAbsVar.1upPlaying)
 	or	a
 	ld	a,(zAbsVar.TempoMod)
+    if OptimiseDriver
+	jr	nz,zSetTempo_1up
+    else
 	jr	z,zSetTempo
 	jr	zSetTempo_1up
+    endif
 
 ; ===========================================================================
 ; helper routines for changing the tempo