(Roblox) Improve FPS Script

local decalsyeeted = true -- Leaving this on makes games look shitty but the fps goes up by at least 20.
local g = game
local w = g.Workspace
local l = g.Lighting
local t = w.Terrain
t.WaterWaveSize = 0
t.WaterWaveSpeed = 0
t.WaterReflectance = 0
t.WaterTransparency = 0
l.GlobalShadows = false
l.FogEnd = 9e9
l.Brightness = 0
settings().Rendering.QualityLevel = "Level01"
for i,v in pairs(g:GetDescendants()) do
    if v:IsA("Part") or v:IsA("Union") or v:IsA("MeshPart") then
        v.Material = "Plastic"
v.Reflectance = 0
elseif v:IsA("Decal") and decalsyeeted then
v.Transparency = 1
elseif v:IsA("ParticleEmitter") or v:IsA("Trail") then
v.Lifetime = NumberRange.new(0)
    end
end