Starting with Windows Vista, the system uses the low-fragmentation heap (LFH) as needed to service memory allocation requests. Applications do not need to enable the LFH for their heaps.

intorr · intorr · commit a2cd2b596ee4 · 2018-02-26T23:55:44.000+05:00
diff --git a/src/xrEngine/main.cpp b/src/xrEngine/main.cpp
@@ -209,14 +209,6 @@ ENGINE_API int RunApplication()
 {
     R_ASSERT2(Core.Params, "Core must be initialized");
 
-    if (!IsDebuggerPresent())
-    {
-        u32 heapFragmentation = 2;
-        bool result = HeapSetInformation(
-            GetProcessHeap(), HeapCompatibilityInformation, &heapFragmentation, sizeof(heapFragmentation));
-        VERIFY2(result, "can't set process heap low fragmentation");
-        UNUSED(result);
-    }
 #ifdef NO_MULTI_INSTANCES
     if (!GEnv.isDedicatedServer)
     {

Original file line number	Diff line number	Diff line change
`@@ -209,14 +209,6 @@ ENGINE_API int RunApplication()`
`209`	`209`	`{`
`210`	`210`	`R_ASSERT2(Core.Params, "Core must be initialized");`
`211`	`211`
`212`		`- if (!IsDebuggerPresent())`
`213`		`- {`
`214`		`- u32 heapFragmentation = 2;`
`215`		`- bool result = HeapSetInformation(`
`216`		`- GetProcessHeap(), HeapCompatibilityInformation, &heapFragmentation, sizeof(heapFragmentation));`
`217`		`- VERIFY2(result, "can't set process heap low fragmentation");`
`218`		`- UNUSED(result);`
`219`		`- }`
`220`	`212`	`#ifdef NO_MULTI_INSTANCES`
`221`	`213`	`if (!GEnv.isDedicatedServer)`
`222`	`214`	`{`