diff --git a/plugins/GSdx/GSTextureCache.cpp b/plugins/GSdx/GSTextureCache.cpp
index d9ea1bcacf..17e661baa4 100644
--- a/plugins/GSdx/GSTextureCache.cpp
+++ b/plugins/GSdx/GSTextureCache.cpp
@@ -23,6 +23,7 @@
 #include "GSTextureCache.h"
 
 bool s_IS_OPENGL = false;
+bool GSTextureCache::m_disable_partial_invalidation = false;
 
 GSTextureCache::GSTextureCache(GSRenderer* r)
 	: m_renderer(r)
@@ -743,10 +744,14 @@ void GSTextureCache::InvalidateLocalMem(GSOffset* off, const GSVector4i& r)
 
 				// note: r.rintersect breaks Wizardry and Chaos Legion
 				// Read(t, t->m_valid) works in all tested games but is very slow in GUST titles ><
-				if (r.x == 0 && r.y == 0) // Full screen read?
-					Read(t, t->m_valid);
-				else // Block level read?
+				if (GSTextureCache::m_disable_partial_invalidation) {
 					Read(t, r.rintersect(t->m_valid));
+				} else {
+					if (r.x == 0 && r.y == 0) // Full screen read?
+						Read(t, t->m_valid);
+					else // Block level read?
+						Read(t, r.rintersect(t->m_valid));
+				}
 			}
 		}
 	}
diff --git a/plugins/GSdx/GSTextureCache.h b/plugins/GSdx/GSTextureCache.h
index 9138b8edcd..dbd9a430eb 100644
--- a/plugins/GSdx/GSTextureCache.h
+++ b/plugins/GSdx/GSTextureCache.h
@@ -116,7 +116,7 @@ protected:
 	uint8* m_temp;
 	bool m_can_convert_depth;
 	int m_crc_hack_level;
-	bool m_disable_partial_invalidation;
+	static bool m_disable_partial_invalidation;
 
 	virtual Source* CreateSource(const GIFRegTEX0& TEX0, const GIFRegTEXA& TEXA, Target* t = NULL, bool half_right = false);
 	virtual Target* CreateTarget(const GIFRegTEX0& TEX0, int w, int h, int type);