The problem with FPS (Fallout 4)

Hello everybody. Previously played in the resolution of 1440h900 with the video card GTX460 at minimum graphics settings without DLS with textures and was getting 45-60 fps.
Changed the card Radeon 4Gb RX570 from Aorus, at maximum speed, the minimum salary, with textures and without only get 30. Removed Lock on fps and textures are getting on ultra with textures 87-115 fps, it's still good, but removed Locka in the loading screens the fps soars up to 600-1000 frames\s, with animation boot screens fiercely quick and start whistling the throttle. Question: how to get the lock to work at 60 fps?. Program from Amud to use tried put 60 fps, Locke does not remove, and when removed Locka puts your lock.
RX 570 4Gb
Huanan X79 V2.47
Xeon E5-2660 (2700Mghz X8)
16Gb DDR3 256bit
SSD 240Gb Radeon R5 (for Windows)