Hello i did what scoob say, i adjusted the fps lines of the config utility but didnt work, did a reinstall of windows 10 an neither work, what i found that work was unpluging the mouse and keyboard, that fixed the stutters and give a boost to the fps even to 100 fps over water all this in fsx and p3d. What i discovered is that my mouse M570 and keyboard K220 are from logitech unpliging them gave me the solution i was looking for. The strange thing is that i connected an EASY line mouse and all went fine, no stutters and good fps, this make me think that your module is not compatible with logitech hardware, by the way this just happen only with your moudules EJETS V1, V2 and ERJ in fsx and p3d, i have DCS and IL2 and the planes included in FSX and P3D and no one of them gave me a problem.
Well thats what i found in a weekend of hard work trying to fix your module, i think that the developers should had found the compatiblity issues of the modules in all the months we have been waiting for a solution of stutters, well i hope you can fix this out or tell us what hardware is compatible with your module.
Thanks