diff --git a/Core/Compatibility.cpp b/Core/Compatibility.cpp
index a9f1a7556e82..11233bf1bb52 100644
--- a/Core/Compatibility.cpp
+++ b/Core/Compatibility.cpp
@@ -97,6 +97,7 @@ void Compatibility::CheckSettings(IniFile &iniFile, const std::string &gameID) {
 	CheckSetting(iniFile, gameID, "AtracLoopHack", &flags_.AtracLoopHack);
 	CheckSetting(iniFile, gameID, "DeswizzleDepth", &flags_.DeswizzleDepth);
 	CheckSetting(iniFile, gameID, "SplitFramebufferMargin", &flags_.SplitFramebufferMargin);
+	CheckSetting(iniFile, gameID, "ForceLowerResolutionForEffectsOn", &flags_.ForceLowerResolutionForEffectsOn);
 }
 
 void Compatibility::CheckSetting(IniFile &iniFile, const std::string &gameID, const char *option, bool *flag) {
diff --git a/Core/Compatibility.h b/Core/Compatibility.h
index 97f2d480755b..9b1dfa5fd779 100644
--- a/Core/Compatibility.h
+++ b/Core/Compatibility.h
@@ -87,6 +87,7 @@ struct CompatFlags {
 	bool AtracLoopHack;
 	bool DeswizzleDepth;
 	bool SplitFramebufferMargin;
+	bool ForceLowerResolutionForEffectsOn;
 };
 
 class IniFile;
diff --git a/GPU/Common/FramebufferManagerCommon.cpp b/GPU/Common/FramebufferManagerCommon.cpp
index 3656475fc479..d907f1ac2f10 100644
--- a/GPU/Common/FramebufferManagerCommon.cpp
+++ b/GPU/Common/FramebufferManagerCommon.cpp
@@ -84,14 +84,17 @@ void FramebufferManagerCommon::Init() {
 
 bool FramebufferManagerCommon::UpdateSize() {
 	const bool newRender = renderWidth_ != (float)PSP_CoreParameter().renderWidth || renderHeight_ != (float)PSP_CoreParameter().renderHeight;
-	const bool newSettings = bloomHack_ != g_Config.iBloomHack || useBufferedRendering_ != (g_Config.iRenderingMode != FB_NON_BUFFERED_MODE);
+
+	const int effectiveBloomHack = PSP_CoreParameter().compat.flags().ForceLowerResolutionForEffectsOn ? 3 : g_Config.iBloomHack;
+
+	const bool newSettings = bloomHack_ != effectiveBloomHack || useBufferedRendering_ != (g_Config.iRenderingMode != FB_NON_BUFFERED_MODE);
 
 	renderWidth_ = (float)PSP_CoreParameter().renderWidth;
 	renderHeight_ = (float)PSP_CoreParameter().renderHeight;
 	renderScaleFactor_ = (float)PSP_CoreParameter().renderScaleFactor;
 	pixelWidth_ = PSP_CoreParameter().pixelWidth;
 	pixelHeight_ = PSP_CoreParameter().pixelHeight;
-	bloomHack_ = g_Config.iBloomHack;
+	bloomHack_ = effectiveBloomHack;
 	useBufferedRendering_ = g_Config.iRenderingMode != FB_NON_BUFFERED_MODE;
 
 	presentation_->UpdateSize(pixelWidth_, pixelHeight_, renderWidth_, renderHeight_);
diff --git a/assets/compat.ini b/assets/compat.ini
index 4a6dbc6caaf0..d94f8534ca41 100644
--- a/assets/compat.ini
+++ b/assets/compat.ini
@@ -1269,3 +1269,17 @@ UCUS98646 = true
 UCET00278 = true
 UCUS98670 = true
 UCUS98646 = true
+
+[ForceLowerResolutionForEffectsOn]
+# The water effect of DiRT 2 and Outrun doesn't work in higher resolutions.
+
+# Colin McRae's DiRT 2 - issue #13012 (water)
+ULUS10471 = true
+ULJM05533 = true
+NPJH50006 = true
+ULES01301 = true
+
+# Outrun 2006: Coast to Coast - issue #11358 (car reflections), #11928 (water)
+ULES00262 = true
+ULUS10064 = true
+ULKS46087 = true