From 2cf0c4f8aaedbdfddfa71322e079685445edafc2 Mon Sep 17 00:00:00 2001
From: Thomas Harte <thomas.harte@gmail.com>
Date: Sat, 21 Feb 2026 22:42:22 -0500
Subject: [PATCH] Switch horses only when certain.

---
 Outputs/ScanTargets/BufferingScanTarget.cpp | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/Outputs/ScanTargets/BufferingScanTarget.cpp b/Outputs/ScanTargets/BufferingScanTarget.cpp
index 14f5f6d9d..ea02ae82e 100644
--- a/Outputs/ScanTargets/BufferingScanTarget.cpp
+++ b/Outputs/ScanTargets/BufferingScanTarget.cpp
@@ -253,10 +253,11 @@ void BufferingScanTarget::announce(
 			}
 			return true;
 		};
-		is_interlaced_.store(
-			!similar_enough(0, 1) && similar_enough(0, 2) && similar_enough(1, 2),
-			std::memory_order_relaxed
-		);
+		if(!similar_enough(0, 1) && similar_enough(0, 2) && similar_enough(1, 2)) {
+			is_interlaced_.store(true, std::memory_order_relaxed);
+		} else if(similar_enough(0, 1)) {
+			is_interlaced_.store(false, std::memory_order_relaxed);
+		}
 	}
 
 	// Proceed from here only if a change in visibility has occurred.