I use the old V-ray - 1.49

Hi,

I keep having quite a strange issue with my renderings. I apply the exact same texture on different faces of my model, but then, after rendering, some of them appear in completelly different size than desired (like too small, or way too big) and some of them are correct.
Do you know what can be the reason of such problem?
I'd appreciate any help.

Cheers