Adjustment going from Party $1/$2 to $2/$4?

[GMan42]

Is it just me, or is $2/$4 way looser than $1/$2 on the Party skins? At 1/2 it seems like I had more success blind-stealing, isolation raising, etc, whereas now I feel like I'm getting greeted by a bunch of cold calls (or a reraise) every time I try. Anyone else find they needed to tighten up and play more straightforward when moving up to this level?

(Not to be results-oriented or anything, but probably part of why I'm posting this is that I'm down 46BB after a few hundred hands at $2/$4. I know this is just a blip, but I just wanted to plug any leaks before it gets worse.)