Theoretically through  IntegerScaler is possible "somehow",  I'm trying right now (
	
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EDIT: Not true...so after searching carefully as far as I understand it is not possible to do stretching with Integer-Scaler (below are the most useful instructions I found to give via command-line to integer-scaler)... The result was even worse. Besides, although you can crop the black side borders... in the end it's the resize that doesn't work as it should.
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-crop [WIDTH_L[,WIDTH_T[,WIDTH_R[,WIDTH_B]]]]
The client area of the game is cropped by 
cropping-out lines of the specified width on the perimeter starting with the left in clockwise order.
Examples:
- -crop 10
 
- -crop 10,20
 
- -crop 10,20,30
 
- -crop 10,20,30,40
 
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Not for scaling! For specifying a custom scale, use the -ratio parameter.
Resizes the game window so that its client area (window area except borders and title bar) has the specified size in pixels.
Useful for games that:
- Don’t resize the game window according to in-game resolution; or set a wrong window size not matching the in-game resolution; or don’t allow to change in-game resolution in windowed mode, but adjust it according to window size.
As a result of using the -resize parameter, the size of the rendering (client) area of the game window before scaling and the internal game resolution must be equal. Otherwise using this parameter may result in image distortion and pixel shimmering.
Example:
-resize 1920x1080
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