I have a problem with solution 5120x1440 ultrawide

[Galliani14]

Hey there

i can choose every solution but if i choose ultrawide ones it is stretched... only thing working is 1920x1080 with big black fields right and left.

ive done everything to get it work but its still stretched a little and thats not fun.

on official blizzard server i dont have this problem.

help :<

[Szrental]

The client here and the one used for classic are very different versions. I'd wager ultrawide wasn't even a thing when 1.12 client was first released. On the launcher is the mod "no1600x1200" that you can try. Never used it myself, but it sounds like it may help you.