1.download and Open HxD[mh-nexus.de]

2.Press Control O

3.Choose the Game's Exe (''afop.exe'' \SteamLibrary\steamapps\common\AFOP)

4.Press Control F

5.Go to Hex Values (on top, not text strings)

6.Activate Search direction forward

7.Search for the first 39 8E E3 3F hex value

8.It should be at the offset 035019F0 (you can see the offset on the left side)

9.Change the 39 8E E3 3F value with the value of your resolution (list down below)

10.Go to the top left and save it where the normal exe is, changing it with the old one

11.Change the in-Game Resolution and the aspect ratio in the settings

before
after fix

• 2560x1080 = 26 B4 17 40
  
• 
  
• 3440x1440 = 8E E3 18 40
  
• 
  
• 3840x1080 = 39 8E 63 40
  
• 
  
• 3840x1440 = AB AA 2A 40
  
• 
  
• 3840x1600 = 9A 99 19 40
  
• 
  
• 5120x1440 = 39 8E 63 40
  
• 
  
• 5120x2160 = 26 B4 17 40
  
• 
  
• 6880x2880 = 8E E3 18 40
  
• 
  
• 7680x2160 = 39 8E 63 40

this is link to original post REDDIT