Why is this service necessary?
A lots of things in our sceneries are written in Phyton language, not in .BGL format.
Couatl is the interpreter that process these scripts, that do basically every special feature we have in the scenery, from ParkMe, YouControl, dynamic objects reacting to time of day, season, weather, docking system, custom PAPIs, custom runway lights, custom RWLS/THL lights, the whole XPOI program is written in Python, and the whole GSX program is written in Python too.
Since it's a separate .EXE, and it's multi-threading too, it will automatically be scheduled by the OS to use free CPU cycles, and with multi-core systems there are plenty of them available (since FSX it's not heavily multi-threaded), this means that the logic that drives all these things can be very complex, without causing any performance impact to FSX itself, since it's not running in the same thread and not even on the same CPU cores, which is ANOTHER reason (other than lots of optimizations when modeling) why all our sceneries are usually faster than any other scenery of comparable size, without renouncing to visual quality and features like movable jetways.
I repeat and confirm this program is not the cause of the problem you are seeing, that's is surely related to something acting on the keyboard, but it's NOT Couatl, there are no dialogs related to hotkey assignments that pops out while flying.
And, in any case, the whole discussion is academic, the module is required by all our sceneries, so you simply can't remove it, otherwise no scenery of ours will work. Just like sceneries from Aerosoft requires their Vimacore.dll module, sceneries from Orbx have a *different* module for *each* scenery, and almost any advance airplane product comes with its own modules too.