Go to 3D Settings > Manage 3D settings.

Global Settings:

• Shader Cache Size > Unlimited

Program Settings:

Select Microsoft Flight Simulator.

• Anisotropic filtering > 16x
• Low Latency Mode > Ultra
• Max Frame Rate > 45 FPS
• OpenGL rendering GPU > NVIDIA Geforce RTX 2080 Ti
• Power management mode > Prefer maximum performance
• Texture filtering – Anisotropic sample optimisation > Off
• Texture filtering – Negative LOD bias > Clamp
• Threaded optimisation > On

Go to Video > Adjust video colour settings.

Video Colour Settings:

• Colour Adjustments > With the NVIDIA settings
• Advanced > Dynamic Range > Full (0-255)