Screen flicking/ glitching

Hi I’m completely new to unreal, iv been teaching myself for the last week. When i load my project everything is ok but when i go to work in the project i.e change material or set up a new camera the screen turns into the image attached. does anyone one how to fix this issues? is it hardware related? Iv got a 2080ti cards card is that the problem? The sence is completely raytracing as well.

Ray tracing was probably set up incorrectly. It requires specific steps to all function correctly, and the right settings. How was the project initially started with ray tracing?

iv set the scene up with the Automotive template with raytracing turned on, the problem only started happening when i added some landscape with Brushify. Iv delete the landscape but it still happening.