Oh, no, I just meant the battle slowdowns. They're caused by the formation code realizing it can't position a formation on really sloped/forested terrain, so it SWAMPS the CPU for a second, then times out. A second later, it tries again, and the same thing happens. Repeat ad infinitum.

Why the RGL fucks up, well, that's because of a few things. One reason: the textures can overrun the available graphics memory, and it's a sign of poor memory management, not usually bad hardware. The ultimate rule of thumb should be "on low textures, it should probably run on modern graphics hardware" which it still doesn't for a lot of people, indicating this mod doing something very, very wrong.

That's actually caused by the morale and formations system, and it can be triggered in forests and mountains. Just turn it off. That said this game DOES cause RGL errors where once there were none, so something in this mod is rotten, but you can guess that from the sheer volume of people saying it's unplayable.

We're all using 1.011. We're all using 4.57 (though you might not be). Fact is, not every computer acts the same way, and you apparently do not have the power of mind or clarity of thought to see that. I'm sorry, but there are the facts.

Let me assure you, not everyone has the exact same setup as you do. This release does have serious crash problems, whether or not you choose to believe it, and minds far greater than yours are working on finding the cause actively.

4.57 has serious crash issues. If yours is crashing a lot, try going back to 4.5 or even 4, because 4.57 in its current state cannot be seen as a stable release. (Hell, right now 4.57 doesn't need to crash to screw things up; the gameplay has more bugs than a Baltimore rowhouse.)