I'm not sure what they've done to my Italian printed Giant RWS but although the card stock feels normal, the laminate isn't. This deck was like a solid brick when I bought it a few years ago and no amount of shuffling, riffling or being heavy-handed with it breaks the hold that these cards have on each other.
I used talc on them about a year ago and that worked until the talc wore off. Its almost as though they are full of static, you can't fan them out or even shuffle them properly without them clumping together, to try and deal one you have to peel it off from the block first. I'd try fanning powder but I'd be worried that the cards would go back once the powder had worked itself off. I also keep it in a bag now because I couldn't get it back into the box without damaging the cards, didn't want to go in, didn't want to come out. LOL
I love to shuffle and this problem makes this deck unworkable for me.