Work Piece Slipping

I don't know if this is a common thing to happen. But I have ruined a bunch of jobs with the work piece or even the waste board slipping on the smooth and slick anodized 80/20 table surface. Obviously that happens more with larger bits and higher feed rates. I can prevent this by clamping down harder but at some point the clamps with mar the wood.

Lately I have been using a few pads of non-slip shelf liner (approx 60/1000" / 1.5mm thick) between the table and the waste board and under the work piece as well. This prevents the problem but makes it harder to get an even surface because the non-slip pads compress a bit.

Is there another proven way to make sure the work piece stays put?

Thanks, JB