I am a new blender user and after 2 months I have a problem that I don't know how to solve. I sincerely hope someone can help me. When I render a scene where there is one or more objects in the open and they are not the interior, everything is as it should be. Final render is clean, clear and sharp. But when I want to make a room, or an apartment, strange textures appear. I posted the pictures so you can see what it’s all about. After the first scene I rendered (Picture 1), the same thing happened in the second scene (Picture 2), then I did the test(Picture 3). I created a cube measuring 4x6x3.6 meters, cut two holes for the window, installed HDRI, lighting and rendered. Exactly the same as the previous two cases. I rendered Scene 1 and Scene 2 with Cycles in Blender versions 2.80, 2.83, 2.93 and 3.0 alpha. It's always the same result. The computer configuration is ryzen 5 3600, 16gb ram and rx 480 4gb. I installed the latest graphics card drivers. Is my computer too weak, so smudged textures appear in the interior scene? Or, if he is not weak, can I somehow solve this problem? Thanks a lot in advance.
I forgot to mention something that might be important. A few days ago I made the first scene with the interior and that rendering was quite ok. Completely normal (Picture 1). Picture 2 shows the settings from the render where the textures are smeared, and picture 3 shows the settings from the interior render which is ok. What confuses me is that the settings where the final render is bad and where the final render is good are the same. At least I didn't notice the difference.
I am using a blender from a zip file, it is not installed. Although I don't think it should matter, but let me mention.