Help!!! Trying to see if I can fix a specific artifact

[antsim]

I am thinking about if this is an artifact that Hybrid is able to fix. How is this artifact of vertical lines called in the first place? Has anyone some idea on how to fix it?

Two examples: 

with the lines circled 

Sample 1 : https://ibb.co/m6dmTzT 
Sample 2 : https://ibb.co/Z2pV3Bh

without the lines circled to have an idea of the image 

Sample 1 : https://ibb.co/zSW8c2G
Sample 2 : https://ibb.co/z8NN8dx


Thanks in advance for any help!!