34" Ultrawide suggestions?

[moocows]

I have a LG Curved Ultra wide 34UC89G-B monitor that I got around 6 years ago.  It has been starting to have weird visual problems as shown in the attached picture (IMG_0044.jpg). Is there a easy fix for it or does this mean that my monitor is dying? I am doubtful that it is a software or graphics card problem because it does not happen on my other 3 monitors. If so I am planning on getting 2 new curved monitors and stacking them. I would like to keep the 34" screen size but I am unsure of whether I am going to get 1440p or 1080p monitors. If I decide I want to keep the same resolution (1080p) this seems like the only option. I do not need the high refresh rate because I mostly use my monitors for web browsing and coding but I have not found any other curved Ultrawide monitors with that resolution. For 1440p I was looking at this. I would also like a monitor with good viewing angles because I am going to stack them .  Any suggestions? Also if I decide to stack them do you have any suggestions for stands that can hold both of them vertically?

 

Thanks,

moocows