does this also use simconnect to communicate with FSX?
Basically every addon uses Simconnect to communicate with FSX.
Umberto...may i please know what weather engine you use..and if its ASN what is the current version that you are using?
I don't use any add-on, other than enabling on the fly those needed to test a new airplane to be included in GSX (like FSUIPC for an FSUIPC-requiring airplanes or PMDG modules for PMDG, etc.).
There are simply too many addons out there to be able to even KNOWN about their existence, let alone buying them, installing them and test them. If we had to become FSX users too (installing stuff, flying, etc.) we wouldn't had any time to develop anything, let alone supporting users, etc. We can only rely on other users for reports about potential issues with other product. That's also why there's Trial version of everything FSDT.
This is the reason why I said to first disable everything, to test GSX all alone and, assuming the stuttering is gone, re-enable each module, one by one, until you find the one causing this.
There are other options too, it's possible to enable Simconnect diagnostic mode, and see if there's an addon sending too much stuff out, or generating errors, and they can cause stutters to everything. But first, try GSX with every other add-on disabled, so you can be sure the problem is not there.
Disabling every other module is accomplished very easily without having to uninstall anything, by setting the following line:
<Disabled>True></Disabled>In all the modules sections of the %APPDATA%\Microsoft\FSX\DLL.XML and EXE.XML file too. Of course, everything must disabled EXCEPT the line relative to bglmanx.dll in the DLL.XML file, and the line relative to Couatl.exe in the EXE.XML.
If you do that, you can test GSX with no other Simconnect modules, without having to Uninstall anything, and of course it would be very easy to re-enable each module, by setting the lines to <Disabled>False</Disabled>