I hadde the same issue, Nvidia 4200 TI, 81 Version an old card but supports T/L so never had an issue with another game, even JO-E. I had the lock ups in in this one during 2nd map also.
I went into adv. settings and deselected App Control. Turned all off, 60hz, Image to High Performance and Mip to BiLin and Text clamp to On. Trip Buff off and Clamp Neg LOD.
Played 2 full maps but were short battles with no lock ups. Not sure which change did it. If I lock up again Ill post back.