UltraSmartSaveInstance

• A smart SaveInstance that correctly saves any games the way they look.

Usage

local prepass = loadstring(game:HttpGet("https://raw.githubusercontent.com/RiseBlox/UltraSmartSaveInstance/main/prepass.luau", true))()

local Options = {} -- Full list @ https://luau.github.io/UniversalSynSaveInstance/api/SynSaveInstance

local PrepassOptions = {
    RequestsPerMinute = 1350,
    MaxInFlight       = 30,
    ApiUrl            = "https://api.lua.expert/decompile",
    Verbose           = true,
    SkipPrepass       = false, -- skip cache warm-up, go straight to USSI
    SkipSaveInstance  = false, -- run only the prepass, don't call USSI
}

prepass(Options, PrepassOptions)

What's different from the original / Why use this version

• Faster, lighter saves - the file is assembled with a table buffer instead of repeated string concatenation, fixing the O(n²) growth that caused "not enough memory" on large games.
• Terrain SmoothGrid / PhysicsGrid are serialized and render properly.
• Unions render correctly - Re-enabled gethiddenproperty during the save (it was being disabled unconditionally) so the union's MeshData2 is actually read, and stopped IgnoreSharedStrings from dropping the MeshData2 / ChildData2 / PhysicalConfigData SharedStrings. On executors that can't read union mesh data, unions fall back to a visible bounding-box Part instead of being invisible.
• Part Color & Size are saved - uses the official Roblox CDN API dump (other dumps strip the serialized Color3uint8 / size members, which made parts load grey & default-sized).
• Decals, images & sounds are saved - the new Content DataType (Image / Texture / SoundId) is handled.

Credits

• luau - Orginal USSI project
• centerepic - USSI Prepass script
• lua.expert - Decompiler tool