Disabling the busy wait, looks like it may not be needed.

QuestHelper/main.lua

@@ -423,7 +423,7 @@ QH_Event("ADDON_LOADED", function (addonid)
     -- This is where the slow stuff goes
     -- 4.0.3a Breakage related
     local datime = time() + 30 -- We're gonna wait 30 seconds, just in case.
-    while datime >= time() do --[[sleep (busy wait)]] end
+    --while datime >= time() do --[[sleep (busy wait)]] end
     QuestHelper_BuildZoneLookup()
     QH_Graph_Init()
     load_graph_links()