Flickering issue with mesh and foliage in unreal viewport and Renders

Hi,

we are facing flickering issues inside unreal engine. Ihave attached a video showing the same and some screenshots of the troubleshooting steps we tried.

Issue : Flickering

As seen in the video the scene has flickering issues which seems to happen at a distance from the camera. Places where we have multiple meshes has the most flickering. Seems to disappear when zoomed in on that particular area.

Steps tried:

-Antialiasing- tried Temporal Anti-Aliasing (TAA) and FXAA.

-PostProcessing

-Tried updating the drivers

-Tried both studio and Game drivers.

-Tried different versions of Unreal engine -5.4,5.3,5.2 - 4.4.

-Z-Fighting (Overlapping Geometry)-Tried moving the meshes slightly aside, no change.

-Changed LODs , same issue.

-Cascade shadows-Changed distance and resolution.

-Enabled Virtual Shadow Maps.

-Tried Lumen and raytracing as well.

-Tried with Nvidia Gsync and Vsync in 3d settings, same issue.

Please let me know if you need any other info on the same or any troubleshooting steps we can try.

Thank you.

Santhosh G R