diff --git a/common/JackControlAPI.cpp b/common/JackControlAPI.cpp
index 99ec06b1..bb545997 100644
--- a/common/JackControlAPI.cpp
+++ b/common/JackControlAPI.cpp
@@ -900,6 +900,9 @@ jackctl_server_open(
     jack_cleanup_shm();
     JackTools::CleanupFiles(server_ptr->name.str);
 
+    // OS specific initialisations
+    JackTools::InitOS();
+
     if (!server_ptr->realtime.b && server_ptr->client_timeout.i == 0) {
         server_ptr->client_timeout.i = 500; /* 0.5 sec; usable when non realtime. */
     }
diff --git a/common/JackTools.cpp b/common/JackTools.cpp
index bf21fbf5..336746db 100644
--- a/common/JackTools.cpp
+++ b/common/JackTools.cpp
@@ -43,11 +43,11 @@ namespace Jack {
 #endif
     }
 
-    void JackTools::ThrowJackNetException() 
+    void JackTools::ThrowJackNetException()
     {
         throw JackNetException();
     }
-    
+
      int JackTools::MkDir(const char* path)
      {
 #ifdef WIN32
@@ -237,6 +237,21 @@ namespace Jack {
         new_name[i] = '\0';
     }
 
+    void JackTools::InitOS()
+    {
+     #ifdef WIN32
+        SIZE_T dwMin, dwMax;
+        HANDLE hProcess = GetCurrentProcess();
+        if (!GetProcessWorkingSetSize(hProcess, &dwMin, &dwMax)) {
+            jack_error("GetProcessWorkingSetSize failed (%d)", GetLastError());
+        } else if (!SetProcessWorkingSetSize(hProcess, dwMin, dwMax * 5)) {
+            jack_error("SetProcessWorkingSetSize failed (%d)", GetLastError());
+        } else {
+            jack_info("SetProcessWorkingSetSize min = %d max = %d", dwMin, dwMax * 5);
+        }
+    #endif
+    }
+
 #ifdef WIN32
 
 void BuildClientPath(char* path_to_so, int path_len, const char* so_name)
diff --git a/common/JackTools.h b/common/JackTools.h
index 4b312563..96063ee5 100644
--- a/common/JackTools.h
+++ b/common/JackTools.h
@@ -63,11 +63,13 @@ namespace Jack
 
         static int MkDir(const char* path);
         static char* UserDir();
-        static char* ServerDir ( const char* server_name, char* server_dir );
+        static char* ServerDir(const char* server_name, char* server_dir);
         static const char* DefaultServerName();
-        static void CleanupFiles ( const char* server_name );
+        static void CleanupFiles(const char* server_name);
         static int GetTmpdir();
-        static void RewriteName ( const char* name, char* new_name );
+        static void RewriteName(const char* name, char* new_name);
+
+        static void InitOS();
 
         static void ThrowJackNetException();