Vulkan API lock at 60fps, and optimization problem on PC.

I have a problem when I activate the rendering mode by Vulkan on my PC, firstly it remains stuck at 60FPS, and the graphics resources are soon high with 98% usage on average, and 50% CPU usage on average, only notable the game is outside the pause period, I have a GeForce GTX 1050 under Window 11, which after verification, supports Vulkan well, I am making this report for remember that optimizations are always necessary. That said, the optimization and stability are much better than before, and I hope that the developers will continue to make efforts to improve the game and its performance.