From 9be90ad5871565f62bc769d6e77642d3acb9428f Mon Sep 17 00:00:00 2001
From: Peter Veenstra <qbix79@users.sourceforge.net>
Date: Sat, 2 Sep 2017 10:23:38 +0000
Subject: [PATCH] When downscaling multiple times in a raw, ensure a minimum
 amount of strength

Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@4041
---
 src/dosbox.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/dosbox.cpp b/src/dosbox.cpp
index 82b2d1fa..2415f850 100644
--- a/src/dosbox.cpp
+++ b/src/dosbox.cpp
@@ -245,6 +245,10 @@ void increaseticks() { //Make it return ticksRemain and set it in the function a
 				if (ticksScheduled >= 250 && ticksDone < 10 && ratio > 5120 && CPU_CycleMax > 50000)
 					ratio = 5120;
 
+				// When downscaling multiple times in a row, ensure a minimum amount of downscaling
+				if (ticksAdded > 15 && ticksScheduled >= 5 && ticksScheduled <= 20 && ratio > 800)
+					ratio = 800;
+
 				if (ratio <= 1024) {
 					double r = 2.0 /(1.0 + 1024.0/(static_cast<double>(ratio)));
 					new_cmax = 1 + static_cast<Bit32s>(CPU_CycleMax * r);