Hello. I was wondering what the timing rules were. Does timing start as soon as you choose a difficulty and end after the final input?

Out of curiosity, is the US version faster than the JP version? All of the runs I've found are on the US version and I can't seem to find any JP runners running the game. I didn't turn much up on nicovideo. Are there any resources for checking out JP FF runs/runners?

Thanks!

Are there any known differences between the Mediakite and Sourcenext versions? RE2 and 3, for example, seem to have considerable differences between their Sourcenext and Mediakite ports. I was wondering if that was the case with Dino Crisis.

I remember reading on Resident Evil Wikia a while back that the Mediakite version was faster than the Sourcenext version. I also remember hearing somewhere that runners were preferring the Mediakite version for door skipping at one point. It seemed like Mediakite was the better version for speedrunning. Could someone fill me in on the how and why Sourcenext came to be preferred, please? Is it because of better compatibility with modern machines? What benefits does the Sourcenext version have/what demerits does the Mediakite version have?

Thanks!