It seems that Capcom has taken a decision to become more strict regarding the rights of its games on the PC platform and to stop tampering with and modifying them. The company has issued a new protection system, or DRM, called Enigma Protector, which will prevent modifying games or adding cheats to them, and will also be a reason for a decline in game frame speeds. At a rate of 15-20 frames.
Capcom has begun adding the new DRM to a group of previously released games and certainly intends to add it to its new games moving forward. There is great anger from the gamer community about this DRM and the limits it will place in dealing with Capcom games on the platform: