Not sure how far along strider existed for SGX, but it was officially mentioned in a 1994 article/interview that the ACD game started out on the SGX platform.
Just some speculation: As for the 30fps thing, given that NEC Ave did both this and Tenchi o Kurau - the 30fps thing probably originated pre-ACD format, where the graphics/data were streamed from the CD on the one frame and game logic on the other frame. Something along those lines.
In the ACD port, the game 'loads' data (pauses) from the AC memory as if it were far memory (CD), instead normally just streaming it directly. There's no reason to do this. Other than to convert a CD game with subsection loading during a level, into an ACD game - quick and dirty.