I am trying to use pbr textures with node wrangler but i am getting weird results and ugly effects, even with all maps, it looks like as if the maps are not set in the right direction. I dont have GPU, maybe thats why this looks so ugly? i use intel HD graphics 1400. i was even trying to model the roofing by hand but this would take very long time and i think its not worth.
Currently, your material only has "fake" bumping. To have actual "real" 3D bumps, follow these steps:
In your material, add a Displacement node right before the Displacement input socket of the Material Output node:
Then, be sure that your Render Engine is set to Cycles and enable the Experimental Feature Set:
Then select your roof object, and add a Subdivision Surface Modifier to it, set it to Simple, and check Adaptive Subdivision:
And finally, go into your Material Properties and under Settings > Surface set the Displacement mode to Displacement and Bump:
This should give you accurate 3D bumping based on your image texture.
Also just as an advice, it's always beneficial to use the latest stable version of Blender: https://www.blender.org/download/