Light glithes on walls

Hi everyone!
I want to ask you about solution to my problem. I created small room in blender, textured it and exported to Unity. Now in 3 points I having glitches like on photo bellow. I tried to change settings of light and material but it isn't change anything.
(Bellow's link to builded game)
https://drive.google.com/open?id=1qNri6ZBEgcjxMgkmiEk1mv9wVWSQbPus