Support forums are always filled with problems, regardless of what percentage of people playing the game encounter issues.
For Sacred 2 you could try the demo (if there is one) first. There can be problems with a demo not in the full game (if it is based on an earlier version of the code, for example), and the full game can have problems when the demo worked fine, but in general a demo should give a fairly good indication of a game's performance, compatibility, etc.
