stop using the mod edit because there are versions that with faster transitions like the European and does not affect as such the run cycle, that all times are accurate to those of the timer.
I tested the original european cadridge on an original gameboy advance sp and it did not have faster transitions like when using certain Emulators or Settings to bypass the original Bios. If you say it is different ill have to ask you for a proof to that.
I was investigating with the emulators and I saw so much in the Japanese, American and European and they all have the fast transitions and even try to modify something of the emulator to see if it deals with it and throws me the same result is more use the same game that I provide the runner kalarse in one of the forums and I also see that he launches fast transmissions in the emulator ... If you say that you played the original version of European GBA in an original Gameboy Advance Sp, I kindly request a proof of the transitions, besides that I use the emulators with the GBA bios and there are also fast transitions. If you find a solution on how to put the "original" transmissions, I appreciate you providing them