Reponsive – Fixed Slider

Hello,
Im using Flex Slider in Carousel mode.
300×200 px.
I only want it to show 3 images.

Unfortunately when the website is viewed on screens with high resolution, you see more images.
Is there a way I can make the images stretch so you only see 3 images whatsoever your resolution is ? The “Stretch” in Advanced setting doesn’t work.
The Website is not completely fixed, so I can’t enter a maximum width.
Any help ?

https://ww.wp.xz.cn/plugins/ml-slider/