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

[antsim]

It's been through AI upscaling but the artifacts was there from beginning. I uploaded the upscaled version because it's more clear to understand. The master video was firstly in Hybrid where I used FineDeHalo, SSIQ (DeRainbow) and LUTDeCrawl to clean it up. Then denoising in TVAI. It's (vertical lines) been there since the master video but now it's way more easy to see because noise and other artifacts are all gone and it's the only thing stayed.