I have problem with landscape/terrain textures. I have it in vanila game and with landscape mods.
uGridsToLoad=7, but I see landscape textures pop-in in loaded cells. I try Skyrim Launcher Ultra settings and BethINI Ultra settings. SSELODGen didn't help me.
i5-9600k 16 GB RAM, Radeon Vega 56 8GB, NVMe SSD.
For example, Cathedral Landscapes (tg console)