[Fractint] Improving & Speeding Up Fractint Disk Video Mode Cache & Rendering Speed???

Any tips as how to improve the processing & rendering speed of the Fractint's Video Disk Save Mode? Does the size of the video disk save affect the size of the video disk save cache buffer and the speed of rendering the pixels? Is there any way to increase the size of the Fractint of Disk Save Mode Cache buffer 64k??? Since RAM is cheap these days I'm running 768 Meg of Ram. Are there any improvements to the Dos config.sys and autoexec.bat and msdos.sys setting that might either enlarge or improve the Fractint rendering performance. TG