Upscaling artifacts on complex areas

[40inD]

I have encountered the following problems when upscaling:

1. Adding some "dotted" noise into clear uniform surfaces like walls, non-textured clothes;
2. Uniform-like or "bacteria"-like noised content instead of original structure of such objects like grass, trees greenery, wallpapers, textured floor surfaces, lace clothings, etc, loosing original context .
3. loosing texture content on objects in background like textured walls, soft furniture surfaces (for example, leather texture).

Even if I explicitly list such objects in a positive promt.

I used default settings and tried different cfg_scale_start and _end values and different s_noise values.

My current settings is: