Wierd artifacts in Substance 3d Painter

     Hello, everybody. 

     I want to ask you for help. Not so long ago I started using Substance Painter, so I don't understand a lot. At first everything went well, I finished two projects, but the last one caused a lot of problems. Starting with crashes, which is not as problematic as the constant appearance of artifacts.

        Beginning from the very start of the program, as in the screenshot above, where the textures are in very low resolution, until I change the resolution to any other (although it was originally 4096 by 4096) and ending with artifacts during the work itself.

Artifacts appear absolutely randomly, they can change their form from a simple turn of the camera and any manipulations with the interface.

I also had problems with texture baking, as in the screenshot above.

      Creating a new project does not help, the problems remain, I did the export from Blender according to the Adobe guide on Youtube. All hope for your help.