CompuServe Messages

I am confused about the role of memory management programs with 3DS. In the past, I never included any memory management running 3DS. I was under the impression Phar Lap ran fastest on its own. In the README file in r3 is the line, "For optimal rendering speed on a 486, we recommend the use of an extended memory manager. We have found that some 486 computers will render at almost twice the speed. . ." Here are my results of rendering the sample model CHEVY at 512×480 to RDPADI under DOS 6.2: No memory managemet: 5 min 32 sec HIMEM only: 5 min 41 sec HIMEM & EMM386: 5 min 56 sec QEMM 7.03: 5 min 56 sec What am I missing here? TIA.