diff --git a/Source/Core/Core/CoreTiming.cpp b/Source/Core/Core/CoreTiming.cpp
index 2e6f6a0968..ae0a7bd2bf 100644
--- a/Source/Core/Core/CoreTiming.cpp
+++ b/Source/Core/Core/CoreTiming.cpp
@@ -16,13 +16,16 @@
 #include "Common/Logging/Log.h"
 #include "Common/SPSCQueue.h"
 
+#include "Core/AchievementManager.h"
 #include "Core/CPUThreadConfigCallback.h"
+#include "Core/Config/AchievementSettings.h"
 #include "Core/Config/MainSettings.h"
 #include "Core/Core.h"
 #include "Core/PowerPC/PowerPC.h"
 #include "Core/System.h"
 
 #include "VideoCommon/Fifo.h"
+#include "VideoCommon/OnScreenDisplay.h"
 #include "VideoCommon/PerformanceMetrics.h"
 #include "VideoCommon/VideoBackendBase.h"
 #include "VideoCommon/VideoConfig.h"
@@ -135,6 +138,17 @@ void CoreTimingManager::RefreshConfig()
 
   m_max_variance = std::chrono::duration_cast<DT>(DT_ms(Config::Get(Config::MAIN_TIMING_VARIANCE)));
 
+#ifdef USE_RETRO_ACHIEVEMENTS
+  if (AchievementManager::GetInstance()->IsHardcoreModeActive() &&
+      Config::Get(Config::MAIN_EMULATION_SPEED) < 1.0f &&
+      Config::Get(Config::MAIN_EMULATION_SPEED) > 0.0f)
+  {
+    Config::SetCurrent(Config::MAIN_EMULATION_SPEED, 1.0f);
+    m_emulation_speed = 1.0f;
+    OSD::AddMessage("Minimum speed is 100% in Hardcore Mode");
+  }
+#endif  // USE_RETRO_ACHIEVEMENTS
+
   m_emulation_speed = Config::Get(Config::MAIN_EMULATION_SPEED);
 }