Well... sub 52 has been broken, and it looks like there was far more improvement (other than NTSC PS2 FDS) than I thought. Could obviously still improve by a few secs, but unless we (somehow) get Inner Atlantis skip to work, or find an entirely new big glitch/skip, I doubt we are breaking any more minute barriers in this category any time soon.

BTW, I noticed my capture card footage in AmaRecTV being a bit behind and broken at the end of Cove, so I had to refresh it twice - as there was no audio after the first one - later it started to lag a lot at the end of Secret Swim, so I kept going to finish the level and then had to refresh a few times to fix it again, as I really did not want something like this killing the best run I ever had, which actually took quite a bit of Cove skip chokes beforehand to get to... either way, might go for a bit more improvement in the future, merely so that the WR footage is not as broken as this one is :)
(thx capture card)