diff --git a/src/helpers/Monitor.cpp b/src/helpers/Monitor.cpp
index 528cb84e2..af79a4e3b 100644
--- a/src/helpers/Monitor.cpp
+++ b/src/helpers/Monitor.cpp
@@ -2558,15 +2558,25 @@ PImageDescription CMonitor::workBufferImageDescription() {
     const bool  isHDRLikeTF =
         value.transferFunction == CM_TRANSFER_FUNCTION_ST2084_PQ || value.transferFunction == CM_TRANSFER_FUNCTION_HLG || value.transferFunction == CM_TRANSFER_FUNCTION_EXT_LINEAR;
 
-    if (isHDRLikeTF || value.windowsScRGB)
-        return LINEAR_IMAGE_DESCRIPTION;
+    const auto& cached = m_cachedInternalDescription->value();
 
-    return CImageDescription::from(SImageDescription{
-        .transferFunction = chooseTF(m_sdrEotf),
-        .primariesNameSet = true,
-        .primariesNamed   = NColorManagement::CM_PRIMARIES_BT2020,
-        .primaries        = NColorPrimaries::BT2020,
-    });
+    // HDR
+    if (isHDRLikeTF || value.windowsScRGB) {
+        if (cached.primariesNamed != NColorManagement::CM_PRIMARIES_SRGB || cached.luminances != value.luminances)
+            m_cachedInternalDescription = LINEAR_IMAGE_DESCRIPTION->with(value.luminances);
+        return m_cachedInternalDescription;
+    }
+
+    // SDR
+    if (cached.primariesNamed != NColorManagement::CM_PRIMARIES_BT2020 || cached.transferFunction != chooseTF(m_sdrEotf))
+        m_cachedInternalDescription = CImageDescription::from(SImageDescription{
+            .transferFunction = chooseTF(m_sdrEotf),
+            .primariesNameSet = true,
+            .primariesNamed   = NColorManagement::CM_PRIMARIES_BT2020,
+            .primaries        = NColorPrimaries::BT2020,
+        });
+
+    return m_cachedInternalDescription;
 }
 
 WP<CMonitorResources> CMonitor::resources() {
diff --git a/src/helpers/Monitor.hpp b/src/helpers/Monitor.hpp
index b4882fe66..478d3fedb 100644
--- a/src/helpers/Monitor.hpp
+++ b/src/helpers/Monitor.hpp
@@ -415,6 +415,9 @@ class CMonitor {
 
     // Resources
     UP<Monitor::CMonitorResources> m_resources;
+    // cached should contain one of predefined descriptions: BT2020 primaries with variable TF and SDR luminances or SRGB primaries with linear TF and variable luminances.
+    // avoids lookup for an id when ::from is used
+    NColorManagement::PImageDescription m_cachedInternalDescription = NColorManagement::CImageDescription::from(NColorManagement::SImageDescription{});
 
     struct {
         CHyprSignalListener frame;