Paradox Interactive has said a Crusader Kings III is inevitable. No official confirmation Crusader Kings 3 is in development yet, but Paradox has said once its predecessor has run its course this will arrive.
PC System Analysis For Crusader Kings III Requirements
Crusader Kings III requires at least a Radeon R7 360X or GeForce GTX 750 Ti to meet recommended requirements running on high graphics setting, with 1080p resolution. This hardware should achieve 60FPS. You will require a DirectX 11 GPU. In short you need a 5 year old PC for best Crusader Kings III performance.