Every texture "High" except for "Visual Effects Texture Quality: Medium".
I bet I could activate it if I launched the game with no DE as going from "Medium" to "High" on that setting seems to be 100 MB.
Setting the Environments Texture Quality to medium while the other textures to high will result in 9399 MB estimated VRAM usage and this includes OS + other apps VRAM usage. The game itself has a 7793 MB estimate. PC OS multitasking usage needs to be restricted to reduce OS + other apps' VRAM usage.
Setting includes ambient shadow quality at half resolution, point lights shadow resolution at medium, screen space reflection accuracy at 75%, volumetric effects quality at medium and 'etc'.
I have
RTX 3070 Ti 8 GB in my living room gaming PC with AMD Ryzen 7 5800X, ASUS ROG Strix X570 Gaming-E, 32 GB DDR4-3400 (DDR4-3600 rated). This is my former primary gaming PC (with RTX 3080 Ti 12 GB that was sold to fund RTX 4090) which I replaced with AM5 based system.
Gaming PC-01 (AMD Ryzen 7 5800X, ASUS ROG Strix X570 Gaming-E, 32 GB DDR4-3400 (DDR4-3600 rated), ASUS ROG Strix RTX 3080 Ti) changed into AMD Ryzen 9 7950X, ASUS ROG X670E Hero 32 GB DDR5-6000, ASUS TUF RTX 4090. For workstation usage. ASUS ROG Strix RTX 3080 Ti was sold to fund RTX 4090.
Gaming PC-02 (AMD Ryzen 9 3900X, ASUS ROG Strix X570 Gaming-F, 32 GB DDR4-3200, MSI Gaming X Trio RTX 3080 Ti changed into AMD Ryzen 9 7900X, ASUS TUF X670E WiFi 32 GB DDR5-6000, Gigabyte RTX 4080 Gaming OC. For gaming and another non-work usage. MSI Gaming X Trio RTX 3080 Ti was sold to fund RTX 4080.
Gaming PC-03 (AMD Ryzen 3 4100, Gigabyte X570 UD, 32 GB DDR4-3200, RTX 3070 Ti changed into AMD Ryzen 7 5800X, ASUS ROG Strix X570 Gaming-E, 32 GB DDR4-3400 (DDR4-3600 rated). For gaming PC living room usage. I can afford to ditch RTX 3070 Ti for RX 7900 XT 20 GB.