This may be that you have dupe vertices over each other, yet they both are connected to the neighboring vertex. Could be wrong. But, what I do when I see this is vertex select and move (grab/move) to see if thereās another vertex underneath, if so I delete and reconnect.
Doesnt seem to be any vertices under it, when I zoom in they appear but when im zoomed out they are not there (which is why I thought it was a graphics card issue)
Iām having the same issue while doing the same tutorial. And in that tutorial the āApply modifier to editing cage during Edit modeā in NOT enabled. When i open the demo .blend files provided with the tutorial, the mesh is perfect, but i canāt get it to look like that even if i try. Could there be some other option enabled that we are not aware of???
I JUST SOLVED IT!!! the problem was in the view clip end distance. By default it was set to 1000. In the source blend file it is set to 5000. Therefore, the solution is:
Open the 3d view right panel (mouse on 3d view, press N)
Scroll down until you find āviewā.
Under āclipā, increase the āendā value until the weird shading goes away