So I went back to playing NWN 2 Complete yesterday. I noticed on loading the game, when I clicked on the ground, most of the time my character wouldn't move.

Tried validating files. Didn't work. Uninstalled. Tried reinstalling. Saw Galaxy give me the big ol' "F U" and tell me my install was corrupt (it was uninstalled at this point)

Solution: Delete game file in the Galaxy directory. Reinstall. Let the cloud saves sync. Load game and BOOM movement is now fine.

The only thing I had done was downloaded some files for a PW a couple of months ago. Seems the whole install just decided to randomly corrupt itself. Gotta love Obsidian games.