I run FSX without addons but the problem persists
What do you mean with this ? Have you disabled ALL the other 3rd party modules from BOTH the DLL.XML and EXE.XML files ? To do this, set each addon as follows:
<Disabled>True</Disabled>
In BOTH the %APPDATA%\Microsoft\FSX\DLL.XML and %APPDATA%\Microsoft\FSX\EXE.XML
Every module, except of course bglmanx.dll in the DLL.XML file, and Couatl.exe in the EXE.XML. Do this, and report back.