a few consoles force discs to run with their region, no matter the region of the cd. That's why layoso's ntsc-j has 0.23 jumps, and zord and many south american players have PAL with 0.26 jumps (not talking about the patched pal version turned into ntsc, that's a different thing).

I don't know what causes these consoles to behave like that, but I certainly wish I knew at least which models are concerned.

If you're interested about time trial, I recommend putting your times on the website ctr4ever.joora.fr, and joining the facebook discussion group La cloaca di ctr.