I was able to play for about 45 minutes last night - after the crash. I reduced detail settings to high (vs. maximum). Although it didn't crash after I reduced settings, it started to "load up" after 30 minutes of gameplay. Either my card started to get hot (didn't check), or a possible memory leak.
The Steam version comes with the patch already integrated.
As far as gameplay goes, the AI seems a little better. They seem to actually take cover vs. strafe all of the time.
If you take a hit and start to bleed, you've got to patch it up pretty quick. I didn't realize how quick you would bleed out until it was too late.