Try making a level that has a single 100-poly model with a 16x16 skin at 16-bit color, publish it, and run it in the slowest computer you can find that can run DX8 or DX9 (for DX8, you'll need 6.22). Even with, say, a 400 MHz processor, an 4 MB video card, 32 MB RAM, etc..

In my case, the reason for the 64 times of running is for the time control feature. I do, however, have a way to reduce it to just 2. The if statements mostly evaluate to false so instead of 10,000 lines processed, it's more around 3500 lines of code processed and I do happen to have some complex math formulas.