I just bought the Vita version 3 days ago. I also played the PC version on max, with absolutely no framerate issues (as its a game that does not have high PC requirements).
My 2 cents on the issue: the Vita version is by far the worse to have, but the only one that is portable. The framerate dips aren't that common, and the game is playable. The control scheme needs to be remapped, I certainly did it, but after tweaking it for a few minutes I finally managed to get a good one. Also there is a stability/remap patch coming out so that should fix some complaints. Also it has all the DLC as far as I know so the $/value of the game is pretty good.
All in all the only thing that brings it down is the stability issue, but again, the ones shown in the video are the extreme cases, and usually the game is fluid enough. Its nowhere near the quality of the PC version, but then it can fit in your pocket. The 65 meta it has is a pretty accurate depiction of what you should expect. Portable, playable but not perfect.
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