Yes, it happens in test game and even in built games.
There is no way to avoid it happen in test game, fpsc will stretch the image that is being rendered to fit image screen (it will deform what you see on screen).
Ertlov did a tutorial on how avoid this happening whilst testing the game, however i tried, but it did not work with me.
I use a laptop with 1366x768 screen resolution.
However, theres is a way to you have perfect screen resolution with built games.
You just need to adjust your setup.ini which is located in the FPSC Program Folder.
You need to change these parameters:
You have to set aspectratio=1 inside the setup.ini
But remember that there are two lines with aspectratio inside this file, and you need to set it to 1 on the two lines.
So now you build your game and everything will be ok.
You don`t need to set the resolution size, because FPSC will fit the view to the player original screen resolution, however, with aspectration turned on, it means that FPSC will mantain the aspect ratio of the screen, which will make increase the field of view (both horizontal and vertical) instead of just stretching your entire screen, thus making models look like squashed.
The only problem is with the huds, they will yes look stretched and ugly, however, i used one video filter plugin (ENB Series for FPSC - http://forum.thegamecreators.com/?m=forum_view&t=180218&b=21) and it applied one fullscreen filter that corrected this problem.
Cheers,
007.
Goldenye 007 N64