Corrupted terrain features

New to 2024. So far from a high altitude, the scenery looks stunning. However, as I get lower, the terrain features and most of the buildings just turning into melted blobs. I’ve got a new PC that should be able to run everything in ultra and a wired high speed internet connection. Any idea how I can get this issue resolved? Whilst on the subject of graphics - what’s the consensus on rolling cache size? I’ve heard different things.

Moved to User Support Hub as OP is requesting community assistance.