diff --git a/rocclr/runtime/device/gpu/gslbe/src/rt/GSLDevice.cpp b/rocclr/runtime/device/gpu/gslbe/src/rt/GSLDevice.cpp
index 026be11da7..8fd9a954f3 100644
--- a/rocclr/runtime/device/gpu/gslbe/src/rt/GSLDevice.cpp
+++ b/rocclr/runtime/device/gpu/gslbe/src/rt/GSLDevice.cpp
@@ -200,6 +200,9 @@ CALGSLDevice::open(uint32 gpuIndex, bool enableHighPerformanceState, bool report
         m_dcfg.nPatchDumpLevel.value |= NPATCHDUMPLEVEL_BITS_HW_DEBUG;
     }
 
+    // disable serialization in LHIO to get perf gains
+    m_dcfg.nPatchDumpLevel.value |= NPATCHDUMPLEVEL_FEATURE_ALLOWUNSERIALIZEDPXPROXY;
+
     //we can use environment variable CAL_ENABLE_ASYNC_DMA to force dma on or off when we need it
     char *s = NULL;
     if((s = getenv("CAL_ENABLE_ASYNC_DMA")))