diff --git a/CMake/cotire.cmake b/CMake/cotire.cmake
index 9a161a1..e47f4f1 100644
--- a/CMake/cotire.cmake
+++ b/CMake/cotire.cmake
@@ -3358,9 +3358,9 @@ else()
 	endif()
 	if (MSVC)
 		# MSVC default PCH memory scaling factor of 100 percent (75 MB) is too small for template heavy C++ code
-		# use a bigger default factor of 140 percent (105 MB)
+		# use a bigger default factor of 170 percent (128 MB)
 		if (NOT DEFINED COTIRE_PCH_MEMORY_SCALING_FACTOR)
-			set (COTIRE_PCH_MEMORY_SCALING_FACTOR "140")
+			set (COTIRE_PCH_MEMORY_SCALING_FACTOR "170")
 		endif()
 	endif()
 	if (NOT COTIRE_UNITY_BUILD_TARGET_SUFFIX)