What Luma version are you using? If it's 9.0 you need to update the ntr boot selector or try to delete (if there is) any ntrboot folder and file and try reinstalling them.
Tried other two games:
MediEvil (USA-NTSC SCUS-94227 track 1 and track 2 .bin files loaded in .cue format) runs on 15 to 25 fps.
Gran Turismo (USA-NTSC VER_1.1 SCUS-94194 .bin ROM) in game menu it runs on 40 fps, in gameplay runs on 30 to 35-37 fps
Resident Evil funziona! (Resident Evil USA-NTSC SLUS_001.70) ho provato solo la ROM .img e funziona su 40-60 fps.
È completamente giocabile
Anche provato Spyro The Dragon (USA-NTSC SCUS-94228 EBOOT.PBP ROM) funziona su 25-35 fps (disattivando VSync funziona da 25 a 40 fps)
Hey, a notice! Try this flasher with your non-hacked 3ds (https://cdn.discordapp.com/attachments/196635695958196224/372106848968507393/ak2i_ntrcardhax_flasher_dsi.zip)
I hope it works for you, good luck
it's weird, it worked fine to me.
It's r4isdhc.com also...
try to restore this flash backup : https://openload.co/f/ThFuibvn6b0/backup.bin
then try again to inject ntrboot.
(to your risk)
https://filetrip.net/file.php?id=33466
when you extract the rar, you need to extract the files in R4SDHC YSmenu folder and put to the sd card, afterwards download this file: https://www.dropbox.com/s/3xxj84uplr97z1k/R4.dat?dl=0 and put on sdcard too