Disgaea 3: Absence of Justice [BLUS30181]

Sooo... If I want to play Disgaea 3 (with good fps) I'll need to wait for a solution?
I guess I just want to know if this is a problem with my PC or with the emulator...
Because, if it's with me, I would like to solve it hahaha

There's alot of things that could give such low fps. Also, dx12 and vulkan aren't that much faster than opengl right now, unless you are using a really old version. Also note that vulkan uses your first gpu only and the selection box does nothing (for both opengl and vulkan).

Do you know if it's possible for me to discover what's the problem? Or if there is some file that says the causes so that I could search for it or for help?
EDIT: I don't know if this is usefull... but... I tried with disgaea 4... I get (with open gl) 45fps at the intro and, with dx12 60fps~70fps... but the game stops in the middle of the intro or (in the best situation) I get the black screen after the start button
I can't play Ice Age 3 either... The same problem: The intro plays reaaaalllyyyy nice but after that I get blackscreen... Do you know if there is a forum or something where I can ask for help with my configs/searching the problem? I guess it's not disgaea 3 but my computer