I have heard many people who have been running into issues playing the game because the PC on which they are running it is not as powerful. Consequently, the game would 'lag' more or they might not even be able to move their avatar at all. There is a way to address this by running the game at lower resolution. The performance of the game should improve and you should have less problems running the game, but the trade-off is that the graphics will be of lower quality. At least this way you can get a 'feel" for what the game is like and use basic functionality like text chat with less issues.