Sorry for necrobump and off-topic, but I apparently found the source of the spin problem (and it's not hacking).
Yes, it's related to the PC performance. To be specific, sometimes the PC fails to play the song smoothly (prolly due to RAM and Page File swap issue), making the song playback becomes "strobing" at a random point. If you happen to get the strobing right at the spinner, you can spin freely there.
What I mean by "strobing" is that the playback goes like: 00:56 - 00:57 - 00:58 - 00:59 -
01:00 - 01:01 - 01:00 - 01:01 - 01:00 - 01:01 - 01:02 - 01:03 - 01:04. (This is for demonstration purpose, the actual strobe timing is in milliseconds)
I play on various PCs, some are slow as heck and some are not. I personally got it, but I won't abuse it because I'm afraid I won't be able to break my record any further, especially at the point I missed 300 on some objects (right, I'm an SS freak
).
Back on topic: I'm curious about the max spin value though...