Various issues with Castlevania: Symphony of the Night (PSN)

Also, it would be fantastic if someone could figure out how to tweak the filtering setting in the PS1 emulator to Nearest Neighbour/not bilinear. As far as I can tell the PS1 emulator's system menu is not accessible when playing on RPCS3 and the PS1 emulator that the PS3 release uses defaults to awful bilinear filtering.

If this is achievable I wouldn't need to do any resolution upscaling to minimize the blur because there wouldn't be any blur!