Very strange Dolphin behavior on mac

[IlyaPlatonov]

I have experienced this thing many times with various Dolphin versions on mac (with both OpenGL and Vulkan).
When some game is too slow and the emulator crashes in process, then when I restart it the game begins to work with the absolute ideal speed. But this lasts just till I close Dolphin. Next time it is sloooow again.
So the last time it was as such:
The game is FF:crystal bearers, Vulkan, Async Ubershaders, the speed for this title typically is pitifully slow. Then Dolphin had hanged ingame and I terminated it. After deleting shader caches and restarting Dolphin the game literally began to fly when i resumed playing from savestate, it was just ideal.
I wish it to always be that way.
Please, help me, and maybe some other mac users to solve this enigma.

MBP early 2011, memory 16G, external GeForce GTX 970 4095 MB

[JMC47]

Is it possible that it's trying to asynchronously compile the shaders in the background and that causes it to be lagging because a lot of your computer power is spent compiling shaders?

[IlyaPlatonov]

Is it possible that it's trying to asynchronously compile the shaders in the background and that causes it to be lagging because a lot of your computer power is spent compiling shaders?

Yes, but after the crash and restart Dolphin does the exactly same thing MUCH faster.