diff --git a/src/core/host_interface.cpp b/src/core/host_interface.cpp
index a1e81938f..2cf0c152b 100644
--- a/src/core/host_interface.cpp
+++ b/src/core/host_interface.cpp
@@ -672,6 +672,19 @@ void HostInterface::FixIncompatibleSettings(bool display_osd_messages)
     Log_WarningPrintf("Disabling mmap fastmem due to rewind being enabled");
     g_settings.cpu_fastmem_mode = CPUFastmemMode::LUT;
   }
+
+  // code compilation is too slow with runahead, use the recompiler
+  if (g_settings.runahead_enable && g_settings.IsUsingCodeCache())
+  {
+    Log_WarningPrintf("Code cache/recompiler disabled due to runahead");
+    g_settings.cpu_execution_mode = CPUExecutionMode::Interpreter;
+  }
+
+  if (g_settings.runahead_enable && g_settings.rewind_enable)
+  {
+    Log_WarningPrintf("Rewind disabled due to runahead being enabled");
+    g_settings.rewind_enable = false;
+  }
 }
 
 void HostInterface::SaveSettings(SettingsInterface& si)
diff --git a/src/duckstation-qt/emulationsettingswidget.cpp b/src/duckstation-qt/emulationsettingswidget.cpp
index 45db861a2..78bf894bd 100644
--- a/src/duckstation-qt/emulationsettingswidget.cpp
+++ b/src/duckstation-qt/emulationsettingswidget.cpp
@@ -101,7 +101,7 @@ void EmulationSettingsWidget::onTurboSpeedIndexChanged(int index)
 
 void EmulationSettingsWidget::updateRewindSummaryLabel()
 {
-  if (m_ui.rewindEnable->isChecked())
+  if (m_ui.rewindEnable->isEnabled() && m_ui.rewindEnable->isChecked())
   {
     const u32 frames = static_cast<u32>(m_ui.rewindSaveSlots->value());
     const float frequency = static_cast<float>(m_ui.rewindSaveFrequency->value());
@@ -122,8 +122,15 @@ void EmulationSettingsWidget::updateRewindSummaryLabel()
   }
   else
   {
-    m_ui.rewindSummary->setText(
-      tr("Rewind is not enabled. Please note that enabling rewind may significantly increase system requirements."));
+    if (!m_ui.rewindEnable->isEnabled())
+    {
+      m_ui.rewindSummary->setText(tr("Rewind is disabled because runahead is enabled."));
+    }
+    else
+    {
+      m_ui.rewindSummary->setText(
+        tr("Rewind is not enabled. Please note that enabling rewind may significantly increase system requirements."));
+    }
     m_ui.rewindSaveFrequency->setEnabled(false);
     m_ui.rewindSaveSlots->setEnabled(false);
   }
@@ -132,4 +139,6 @@ void EmulationSettingsWidget::updateRewindSummaryLabel()
 void EmulationSettingsWidget::updateRunaheadFields()
 {
   m_ui.runaheadFrames->setEnabled(m_ui.runaheadEnable->isChecked());
+  m_ui.rewindEnable->setEnabled(!m_ui.runaheadEnable->isChecked());
+  updateRewindSummaryLabel();
 }