In this movie
[2541] PSX Castlevania: Symphony of the Night by ForgoneMoose in 18:40.08, there is a couple cutscene that you have to go trough, because its baseline it does not use sram, which mean you cannot skip cutscenes by pressing start.
The first cutscene is unavoidable (maria).
The second cutscene is cleverly skip by going outside bounds with glitches and completly skip the trigger (richter cutscene), it saves some seconds compared to watch the cutscene.
-it is possible to go trough the trigger, and still keep going trough the second part of the game, wanted to make sure doing that mean loosing time, not saving, since its longer than going outside bounds. (and technically its not "gameplay").
The third cutscene happens right before dracula with shaft boss; I wanted to make sure that if I manage to skip that cutscene trough a glitch (like I did in the recent pacifist), it saves time compared to just wait the cutscene is over.
Now on a different matter and where it starts to be complicated is, the glitch is for jp version only, in us version you get to skip the FMV at the game start, in jp you cannot skip that, but, you can skip the cutscene right before you switch to alucard, while in usa you cannot skip that one.
Cutscenes ingame in jp are also ironically, slightly longer than their us counterpart, at the very least for prologue and shaft.
Bottom line, what I would hope is, the intro and fmv doesnt matter, but skipping the dialogue for shaft does really save time/valid for obsoletion (its at least 40 seconds compared to wait the cutscene to end).