The new Elden Ring mod that was released today restores the LOD, shadows, and more to what was shown before the game’s release.
The mod, LOD Restored, is already working fine according to its creator, but it’s more of a proof of concept in its current state, as some additional tweaking may be required due to a likely performance hit. Also, it is best to use this mod while playing offline to avoid bans.
Below are two comparison screenshots: