Are you sure that it's not your memory card? My ROM works with no lag.

i keep freezing at the driftveil tournament i tried couple of patches but nothing works, i tried clean rom + ds scene tool patch and and prepatched version ( i use DSTWO)

I have little experience with DSTwo, but use a clean ROM and enable some setting.

what settings?

I have made a new v2 AP Patch for Black/White 2
If you have a clean rom, use the _CLEAN.xdelta patch
If you have an already PATCHED rom, use the _PATCHED.xdelta patch
All dumps used are PROPERS with the DSi data at the end of the dump, NOT padded with FF bytes to fill 512MB
Tested on DSTWO in PATCHED MODE (highlight game and press X. Mode = Patch)
Tested on DSONEi SDHC in PATCHED MODE (highlight game and press Y. Bypass Antipiracy = Turn Off)
PWT no longer freezes after 1st battle and GTS Negotiations is working

Multi ROM Patch (Pokémon Black 2/White 2)
New usrcheat for Black 2/White 2 Multi ROM Patch

This post has been edited by retrogamefan, Mon, October 22nd, 2012 at 22:17

Hoping that patch works. Downloading the game right now.

The DS-Scene Rom Tool has also been updated.

The numbered releases are out (Black v2, White v2). If I understand the scene rules right, they should be unpatched. Would the previous AP patches still work or will there need to be new ones?

Edit: trying to patch with retrogamefan's patches gives me a checksum mismatch error about 200 MB or so in. I couldn't figure out how to patch it with the xdelta CLI utility and the GUI utility doesn't seem to have an option to ignore checksums.

This post has been edited by twocows, Sun, February 3rd, 2013 at 03:53

An existing patch will work.
The problem is that patches are registered to the CRC32 of the game. The two new releases by frieNDS, have a different CRC32.

So the AP patch code will work, it just needs to be changed for the new releases.
Hopefully RGF will update his database for the Rom Tool.

Hoping I make sense.

Makes sense to me. I tried searching for the CRC of the version of B2 that it does work with in the clean patch, but unfortunately I didn't find it. I guess it's not a problem that can be solved with my very basic hex editing skills.