In your General tab, under Shader Compilation, switch from Asynchronous (Skip Draw) to Asynchronous (Ubershader).
Under enhancements, see if turning off Force 24-bit color helps.
You may also want to see how Dolphin runs in portable mode. In the folder with Dolphin.exe, create a blank text file named "portable.txt" (without the quotes). This will put Dolphin in a "fresh" state to see if we can rule out corrupted files in your global Dolphin files. Then switch over to Vulkan and don't change anything else.
Also a good thing to check, go to the Nvidia Control Panel and make sure that Dolphin has a profile setup to use maximum power instead of the other choices like adaptive, because it could be that your GPU isn't recognizing that it's playing a game and needs to go into high gear.
Under enhancements, see if turning off Force 24-bit color helps.
You may also want to see how Dolphin runs in portable mode. In the folder with Dolphin.exe, create a blank text file named "portable.txt" (without the quotes). This will put Dolphin in a "fresh" state to see if we can rule out corrupted files in your global Dolphin files. Then switch over to Vulkan and don't change anything else.
Also a good thing to check, go to the Nvidia Control Panel and make sure that Dolphin has a profile setup to use maximum power instead of the other choices like adaptive, because it could be that your GPU isn't recognizing that it's playing a game and needs to go into high gear.