So with the new MZ update, which is 1.4.0, they brought back the Animation spritesheet system from MV to MZ. The default framerate was so slow tho so I tried the Book plugin but even with the parameter setting to 1, it still doesn't make any changes. :(
Viewing post in Hakuen Studio Eli Book RPG Maker MV MZ comments
I got it. i was taking more tests here and it seems that I just implemented more MV animation features, but in a way to replicate the MV style. And that parameter for Animation Playspeed is just for the flashes. I will have to take a look at this again to fix some things and maybe set this as a different plugin.
But, I think you can disable the MV animations on my Eli Book and instead use this plugin from Theo:
https://forums.rpgmakerweb.com/index.php?threads/animation-fps-and-offset-contro...