I don't see any red lines..?
Um?I don't see the issue?
It's just texture, distance, and rendering issues, I think. Totally "normal"
In the back.By the big window in the first and second pictures, and the back of the kitchen in the third picture, the textures on the floorPerhaps the pictures simply don't do enough, but it doesn't look like it's all that gamebreaking of an issue.