It also states that Fallout 4 will follow the same restrictions on PS4 with mods limited to 900MB or less.
This was detailed in a new Skyrim: Special Edition FAQ published by Bethesda. Xbox One, on the other hand, will support up to 5GB of modded content, considerably more than Sony’s platform.
User-created mods for Skyrim: Special Edition will be limited to 1GB on PS4, Bethesda has announced.