I'm on an ASUS 27" 144HZ monitor and I'm having no problem with big resolutions. I'm running it on Ultra as well with my 3gig AMD 7950 card as well.
And yes, I just had my first crash doing a quickload to replay a battle when it CTD and like the others I couldn't send the bug report. Click it it and says 'Cancelled' so you have to say 'No thanks'. So, getting that fixed asap is a priority.
