micktiegs_8: Could it be that these problems are more specific to you? I haven't had crashes or corruption on the three different machines I've played on. The performance was an issue but when I turned off 'load on demand' it was much better.
I highly doubt it. I don't have any performance problems with any other games and am also able to play The Witcher 3 at 1920x1200 @ 30FPS or 2560x1600 @ 20FPS. The first Mount and Blade game runs like lightening at 2560x1600 with all effects maxed out. Warband runs terrible at 1920x1200 with most effects disabled.
It's definitely an issue in the game itself. It might be an issue that only affects certain video cards or brands (I have an AMD Radeon HD7850), but I'm in no way alone as Google confirmed when I searched before. The game has graphics corruption issues also, or which I do not encounter with any of the other 100+ games I have installed and have played including the original Mount and Blade.
Very much a game flaw, and that is true regardless of whether someone else out there can play it without any problems at all. Problems with games rarely are "works for everyone" or "problem happens for everyone" because everyone has very different hardware, drivers and other variables.