It may be helpful if you tell us how you are making up your shaving lather?

I find that if you make your lather too strong, it dries out on your face and the razor will stick not glide.

I let my brush stand in hot water for a few moments, then stand it up and let the surplus water run out with out shaking it. I use shaving cream, about the size of an almond, and leave about a teaspoon of water in the mixing bowl too.

I then give it a good mixing to really hydrate the lather, takes at least a minute or so, until you get a soft creamy lather with no holes in the end of the brush.

One other reason for drag is not stretching your skin as you shave, watch Lynns video