Black screen in cutscenes (Assassin's Creed 4: Black Flag)

Many have faced this problem, but solution or not.
All the classics, starts the cutscene, the screen goes black and then the game is minimized, and no signs of life. Did some experiments, and found that it is not affected by any setting except antialiasing. The game only works with anti-aliasing FXAA and SMAA. Also if you change the smoothing during the cutscene, the video is rendered, and will continue for a couple seconds. Checked it all on Repack from Mechanics and Hatab. Several times checked the driver, and all adjacent software and run as administrator.
There is also a bug with the blur that the appearance training tips, some places are not blurred, and it definitely looks like a graphics artifact.
Another noted the oddity that the fps does not rise above 20, which is quite strange in my build. -Maybe there's a Rev limiter?
Although I will note that on the old GeForce 9600 GT 521мб the game worked, although the maximum acceleration of the card and low fps, and I even came to arrest the GG when trying to penetrate somewhere there...
Now vidyuhi RX 590 8GB, the rest of the system is the same. Maybe the problem is to optimize for Nvidia?
If anything, percents Pentium Dual-Core E5300 2.6 GHz, overclocked to 3.3 GHz.
4 gig of RAM.
And not to write that the computer is too weak again, on vidyuhi Nvidia, everything worked.
PS even in the old vidyuhi fps sometimes went beyond 20.