Why does this happen with BSDF Principled?

I’m trying to work and learn the textures / materials using BSDF in Upbge 0.3, but do these dotted lines occur because it is an alpha version or did I miss something?

It’s probably SSR noise. As UPBGE can’t accumulate tons of samples for one frame you’ll have rendering artifacts when things are moving that would get smoothed out in eevee the longer / more samples you’ll have per frame.

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thank you, I believe that’s it. Within the SSR I worked with the roughness and practically eliminated the problem