HPX 370 Blurry in Concert lighting conditions

I am currently using two brand new HPX370's at a major concert venue. We are not using CCUs, rather just taking the straight HD-SDI out of the camera.

Over the weekend, we needed to move one camera farther away from its normal near the stage position, and using a lens adapter, we put a 2/3" Fuji 19x8/7 lens on it. I wasn't present at the concert, but I got word from the venue that when harsh lighting changes occurred, the picture appeared blurry. The director said during constant lighting, it seemed ok.

I am wondering if this has something to do with the DRS being turned on, and whether the compensation is too drastic under such extreme lighting conditions.

Help?