.. always in a new faction I haven't played. Flickerings, climbing bugs, too high mouse sensitivity, etc? There are fixes for these problems, like there are for G1/G2/G3. I don't understand these complaints. You can also wait for the official patch that is coming in January. It's not that difficult, you only need to find the teachers teaching strength in the beginning, so you have a chance against others. The quest map is showing you waypoints not like in Gothic 3, so it's easier to navigate. The length of the game is similar to Gothic 1. After Gothic 1 and Gothic 2, the best game from Piranhabytes, in by opinion.
Although the official servers have been shut down, you can still play games with friends all over the world. There are still active map-makers - that game never gets old. You can't buy the Vikings Add-On anywhere, but that's ok - there would be some facilities in the economy. But besides this 10th Anniversary and the Vikings extension there were more games like this from the makers, with more economic diversity. One of my favorite RTS economy games.
So it's a great game I played once in my childhood. It's still playable in Multiplayer worldwide, but with some 3rd-party programs. If you get used to this game, know all the tricks with mixing units, it's easy to win on hard. It has a great plot, along with what's written in the User Manual (CD Version had manuals made of paper) But if you still experience some crashes I recommend turn on VSync, or find an other way to lock the FPS to 120 or 144. Maybe it's a fault of too high frame rates.