When i create a new Material i get strange artifacts as shown in the image. This also persists when i add a color texture.
It also happens when i start the game.

I updated my gpu drivers to the latest one, but the issue still persists.

What i found out is that as soon as i create bump/normal map by dragging the color texture onto the bump slot, the issue is gone. When i remove the bump map, then the artifact reapears.

[EDIT]
Ok the same happens when i import an fbx model. And again, when i set a bump map, the artifact disapears.

But in all cases when i added a bump map, another artifact appears. This can be seen in the last attachement: strange white lines...

My gpu is a Geforce GTX 3080 TI.

Notes:
- i tried many other engines and also code first frameworks, and in none of them i faced this issue. I think this probably rules out hardware issues.
- the small navigation cube at the top left also has those strange artifacts as shown in attachment 4

This does seem like GPU/Driver issue.

2nd problem with bump map and UV seams - that's expected behavior.

Ok, i took the time to try out all engines again to see if this material issue/graphics issue is present there: and in no engine i have this issue. I tried: Godot 3, Godot 4, Unreal Engine 4, Unreal Engine 5, Cave Engine, Wicked Engine, Game Guru Max and Classic, CopperCube, Flax Engine, Stride Engine and ThreeJs. So this covered: Dx9, Dx11, Dx12, Vulkan, OpenGL 3.3, OpenGL 4.3, OpenGL ES 2.0, WebGL and WebGPU.
So i am almost certain that it must be an issue in Titan Engine, not on my end or driver issue on my computer.

Ok finally i found the issue: Somehow Titan Engine was using the integrated GPU, not the dedicated GPU (i have an Alienware Gaming Notebook). I manually set it in the Nvidea settings that Titan Engine should be using the dedicated one, now the glitches are gone.

Now when thinking about it: i am surprised how smooth the performance was on integrated GPU...

My engine is very optimized
Glad problem is solved