Two exact same printers and two same software but....getting different result

We have two fairly new mimaki jfx200 2531 and run rasterlink 6 on both and all of the sudden one of them is not printing a gradient the correct or normal way. I have attached images and seeking some help. Bear in ming these are the exact same files and both printers are ran with independent computers by usb cable. Also bear in mind they both use to print this file with no issues at all.

Any thoughts, the gradient on the one is more faded and you can see the outline of the gradient area for some reason rather than it just fading correctly like the other image. You can see the arrow below on the first image and the second image it from the printer that is printing correct.

 

The printers are in two areas of the shop and would prefer to print any job we have on any of our printers rather than picking a choosing.

 

I am not sure can you advise as to where i might find that setting Solventinkjet?

 

That was my first thought but not sure how to see if both rasterlinks are the same version

 

Everything is exactly the same. I am at a loss. Cannot figure this out. It seems like it must be a random update because both printers were printing the same file correctly.

I did notice one computer rasterlink version is 5.16 and the one with the issue is version 5.15. So i will try an update later today