Whee, even more problems arising!
After trying to play EoSD with Marisa, I noticed that I have some quite noticeable input lag. So I grab the vsync patch as I always do for MoF and lo and behold, nothing changed! Then I tempered with custom.exe, trying all sorts of combinations. Lo and behold, nothing changed!
Is there anything else I can try or am I out of luck with EoSD? Vsync works for fine for PCB, IN and MoF, but not EoSD. D: