diff --git a/Config/IDEPrefs b/Config/IDEPrefs
index d6debc520b72946e7e51f641e55dcf3a52375a26..5ecf161daacdf2da91c53fe4abb8204cd6108a18 100644
--- a/Config/IDEPrefs
+++ b/Config/IDEPrefs
@@ -104,8 +104,8 @@ LnkOp
 	GenerateDLL:	False
 	ExportedNames:	
 AppOp
-	HeapSize:	409600
-	StackSize:	102400
+	HeapSize:	2097152
+	StackSize:	512000
 	ExtraMemory:	81920
 	IntialHeapSize:	204800
 	HeapSizeMultiplier:	4096
diff --git a/Pm/PmTypes.icl b/Pm/PmTypes.icl
index e857f479e4acd0885bd7e4e05d9028d86ae0ab7e..70c54f7098bb52a404960f1770a2b9ffc684692b 100644
--- a/Pm/PmTypes.icl
+++ b/Pm/PmTypes.icl
@@ -320,11 +320,11 @@ DefCodeGenOptions =
 
 DefApplicationOptions :: ApplicationOptions;
 DefApplicationOptions =
-	{	hs	= 409600
-	,	ss	= 102400
-	,	em	= 81920
-	,	heap_size_multiple = 4096/*16*256*/
-	,	initial_heap_size = 204800
+	{	hs	= 2<<20
+	,	ss	= 500<<10
+	,	em	= 8<<10
+	,	heap_size_multiple = 16<<8
+	,	initial_heap_size = 200<<10
 	,	set	= False
 	,	sgc	= False
 	,	pss	= False