Problem is exporting car/mdf file

Hi,

I have a system containing solution over a mineral surface. System contains 19972 atoms. After anealing at 800k in NVT for 3ns, atoms move away and fall in a range of ~(-150 to 500 Angstrom range) in xyz coordinates. I extracted a frame from anealling run and export it as car/mdf file. My issue is that I could not work on that car/mdf file in material studio. It opens very slowly and could not export to other file formats.

Is ther any coordinates limits in Material studio? Can any one guide me

Tariq