diff --git a/Common/System/System.h b/Common/System/System.h
index 8bc5d71b98..e171d9f760 100644
--- a/Common/System/System.h
+++ b/Common/System/System.h
@@ -219,6 +219,8 @@ enum SystemProperty {
 
 	SYSPROP_CAN_READ_BATTERY_PERCENTAGE,
 	SYSPROP_BATTERY_PERCENTAGE,
+
+	SYSPROP_ENOUGH_RAM_FOR_FULL_ISO,
 };
 
 enum class SystemNotification {
diff --git a/Core/FileLoaders/RamCachingFileLoader.cpp b/Core/FileLoaders/RamCachingFileLoader.cpp
index 826e0b11c4..5e7eb07e62 100644
--- a/Core/FileLoaders/RamCachingFileLoader.cpp
+++ b/Core/FileLoaders/RamCachingFileLoader.cpp
@@ -21,6 +21,7 @@
 
 #include "Common/Thread/ThreadUtil.h"
 #include "Common/TimeUtil.h"
+#include "Common/Log.h"
 #include "Core/FileLoaders/RamCachingFileLoader.h"
 
 // Takes ownership of backend.
@@ -91,6 +92,7 @@ void RamCachingFileLoader::InitCache() {
 	// Overallocate for the last block.
 	cache_ = (u8 *)malloc((size_t)blockCount << BLOCK_SHIFT);
 	if (cache_ == nullptr) {
+		ERROR_LOG(Log::IO, "Failed to allocate cache for Cache full ISO in RAM! Will fall back to regular reads.");
 		return;
 	}
 	aheadRemaining_ = blockCount;
@@ -178,6 +180,8 @@ void RamCachingFileLoader::SaveIntoCache(s64 pos, size_t bytes, Flags flags) {
 				if (blocksToRead >= MAX_BLOCKS_PER_READ) {
 					break;
 				}
+
+				// TODO: Shouldn't we break as soon as we see a 1?
 			}
 		}
 	}
diff --git a/Core/System.cpp b/Core/System.cpp
index 4da27e3232..27a27998ef 100644
--- a/Core/System.cpp
+++ b/Core/System.cpp
@@ -425,15 +425,17 @@ bool PSP_InitStart(const CoreParameter &coreParam, std::string *error_string) {
 	IdentifiedFileType type = Identify_File(loadedFile, &g_CoreParameter.errorString);
 	g_CoreParameter.fileType = type;
 
-	if (g_Config.bCacheFullIsoInRam) {
-		switch (g_CoreParameter.fileType) {
-		case IdentifiedFileType::PSP_ISO:
-		case IdentifiedFileType::PSP_ISO_NP:
-			loadedFile = new RamCachingFileLoader(loadedFile);
-			break;
-		default:
-			INFO_LOG(Log::System, "RAM caching is on, but file is not an ISO, so ignoring");
-			break;
+	if (System_GetPropertyBool(SYSPROP_ENOUGH_RAM_FOR_FULL_ISO)) {
+		if (g_Config.bCacheFullIsoInRam) {
+			switch (g_CoreParameter.fileType) {
+			case IdentifiedFileType::PSP_ISO:
+			case IdentifiedFileType::PSP_ISO_NP:
+				loadedFile = new RamCachingFileLoader(loadedFile);
+				break;
+			default:
+				INFO_LOG(Log::System, "RAM caching is on, but file is not an ISO, so ignoring");
+				break;
+			}
 		}
 	}
 
diff --git a/SDL/SDLMain.cpp b/SDL/SDLMain.cpp
index 1dd710ac35..537f250762 100644
--- a/SDL/SDLMain.cpp
+++ b/SDL/SDLMain.cpp
@@ -625,7 +625,13 @@ bool System_GetPropertyBool(SystemProperty prop) {
 #endif
 	case SYSPROP_CAN_READ_BATTERY_PERCENTAGE:
 		return true;
-default:
+	case SYSPROP_ENOUGH_RAM_FOR_FULL_ISO:
+#if defined(MOBILE_DEVICE)
+		return false;
+#else
+		return true;
+#endif
+	default:
 		return false;
 	}
 }
diff --git a/UI/GameSettingsScreen.cpp b/UI/GameSettingsScreen.cpp
index ce9ad044db..a6d2e9d55a 100644
--- a/UI/GameSettingsScreen.cpp
+++ b/UI/GameSettingsScreen.cpp
@@ -1341,7 +1341,10 @@ void GameSettingsScreen::CreateSystemSettings(UI::ViewGroup *systemSettings) {
 	if (System_GetPropertyBool(SYSPROP_HAS_KEYBOARD))
 		systemSettings->Add(new CheckBox(&g_Config.bBypassOSKWithKeyboard, sy->T("Use system native keyboard")));
 
-	systemSettings->Add(new CheckBox(&g_Config.bCacheFullIsoInRam, sy->T("Cache ISO in RAM", "Cache full ISO in RAM")))->SetEnabled(!PSP_IsInited());
+	if (System_GetPropertyBool(SYSPROP_ENOUGH_RAM_FOR_FULL_ISO)) {
+		systemSettings->Add(new CheckBox(&g_Config.bCacheFullIsoInRam, sy->T("Cache ISO in RAM", "Cache full ISO in RAM")))->SetEnabled(!PSP_IsInited());
+	}
+
 	systemSettings->Add(new CheckBox(&g_Config.bCheckForNewVersion, sy->T("VersionCheck", "Check for new versions of PPSSPP")));
 	systemSettings->Add(new CheckBox(&g_Config.bScreenshotsAsPNG, sy->T("Screenshots as PNG")));
 	static const char *screenshotModeChoices[] = { "Final processed image", "Raw game image" };
diff --git a/Windows/main.cpp b/Windows/main.cpp
index 5b38d02c75..f9ede5e66f 100644
--- a/Windows/main.cpp
+++ b/Windows/main.cpp
@@ -406,6 +406,8 @@ bool System_GetPropertyBool(SystemProperty prop) {
 		return true;
 	case SYSPROP_CAN_READ_BATTERY_PERCENTAGE:
 		return true;
+	case SYSPROP_ENOUGH_RAM_FOR_FULL_ISO:
+		return true;
 	default:
 		return false;
 	}