diff --git a/src/burn/drv/pre90s/d_dkong.cpp b/src/burn/drv/pre90s/d_dkong.cpp
index dbdb15361e..e71cc4c6ca 100644
--- a/src/burn/drv/pre90s/d_dkong.cpp
+++ b/src/burn/drv/pre90s/d_dkong.cpp
@@ -2003,6 +2003,7 @@ static INT32 Dkong3Init()
 
 	nesapuInit(0, 1789773, 0, dkong3_nesapu_sync, 0);
 	nesapuSetAllRoutes(0, 0.95, BURN_SND_ROUTE_BOTH);
+	nesapuSetArcade(1);
 
 	nesapuInit(1, 1789773, 0, dkong3_nesapu_sync, 1);
 	nesapuSetAllRoutes(1, 0.95, BURN_SND_ROUTE_BOTH);
diff --git a/src/burn/drv/pre90s/d_punchout.cpp b/src/burn/drv/pre90s/d_punchout.cpp
index c44757b65d..258b316ef2 100644
--- a/src/burn/drv/pre90s/d_punchout.cpp
+++ b/src/burn/drv/pre90s/d_punchout.cpp
@@ -47,6 +47,8 @@ static UINT8 DrvInputs[2];
 static UINT8 DrvDips[2];
 static UINT8 DrvReset;
 
+static INT32 nExtraCycles;
+
 static struct BurnInputInfo PunchoutInputList[] = {
 	{"P1 Coin",		BIT_DIGITAL,	DrvJoy2 + 7,	"p1 coin"	},
 	{"P1 Up",		BIT_DIGITAL,	DrvJoy2 + 2,	"p1 up"		},
@@ -506,9 +508,12 @@ static INT32 DrvDoReset()
 	M6502Close();
 
 	vlm5030Reset(0);
+	nesapuReset();
 
 	spunchout_prot_mode = 0;
 
+	nExtraCycles = 0;
+
 	HiscoreReset();
 
 	return 0;
@@ -675,10 +680,11 @@ static INT32 CommonInit(INT32 (*pInitCallback)(), INT32 punchout, INT32 reverse_
 	M6502Close();
 
 	vlm5030Init(0, 3580000, punchout_vlm_sync, DrvVLMROM, 0x4000, 1);
-	vlm5030SetAllRoutes(0, 0.50, BURN_SND_ROUTE_BOTH);
+	vlm5030SetAllRoutes(0, 0.70, BURN_SND_ROUTE_BOTH);
 
 	nesapuInit(0, 1789773, 0, punchout_nesapu_sync, 0);
-	nesapuSetAllRoutes(0, 0.50, BURN_SND_ROUTE_BOTH);
+	nesapuSetAllRoutes(0, 0.70, BURN_SND_ROUTE_BOTH);
+	nesapuSetArcade(1);
 
 	GenericTilesInit();
 
@@ -1050,9 +1056,9 @@ static INT32 DrvFrame()
 		}
 	}
 
-	INT32 nInterleave = 10;
+	INT32 nInterleave = 32;
 	INT32 nCyclesTotal[2] = { 4000000 / 60, 1789773 / 60 };
-	INT32 nCyclesDone[2] = { 0, 0 };
+	INT32 nCyclesDone[2] = { nExtraCycles, 0 };
 
 	ZetNewFrame();
 	M6502NewFrame();
@@ -1063,19 +1069,20 @@ static INT32 DrvFrame()
 	for (INT32 i = 0; i < nInterleave; i++)
 	{
 		CPU_RUN(0, Zet);
+		if (i == (nInterleave - 1) && *interrupt_enable) ZetNmi();
+
 		CPU_RUN(1, M6502);
+		if (i == (nInterleave - 1)) M6502SetIRQLine(M6502_INPUT_LINE_NMI, CPU_IRQSTATUS_AUTO);
 	}
 
-	if (*interrupt_enable) ZetNmi();
-
-	M6502SetIRQLine(M6502_INPUT_LINE_NMI, CPU_IRQSTATUS_AUTO);
-
 	nesapuUpdate(0, pBurnSoundOut, nBurnSoundLen);
 	vlm5030Update(0, pBurnSoundOut, nBurnSoundLen);
 
 	M6502Close();
 	ZetClose();
 
+	nExtraCycles = nCyclesDone[0] - nCyclesTotal[0];
+
 	if (pBurnDraw) {
 		BurnDrvRedraw();
 	}
@@ -1105,6 +1112,8 @@ static INT32 DrvScan(INT32 nAction, INT32 *pnMin)
 		nesapuScan(nAction, pnMin);
 
 		SCAN_VAR(spunchout_prot_mode);
+
+		SCAN_VAR(nExtraCycles);
 	}
 
 	if (nAction & ACB_NVRAM) {
diff --git a/src/burn/snd/nes_apu.cpp b/src/burn/snd/nes_apu.cpp
index 5fe0ef8c80..52618dda56 100644
--- a/src/burn/snd/nes_apu.cpp
+++ b/src/burn/snd/nes_apu.cpp
@@ -1111,6 +1111,8 @@ void nesapuExit()
 	BurnFree(nes_ext_buffer);
 	nes_ext_sound_cb = NULL;
 
+	nesapuSetArcade(0);
+
 	DebugSnd_NESAPUSndInitted = 0;
 }