How can I get this simple HeartBeat script I made to work the way I want?

I have made a simple HeartBeat script that will change the brickcolor and material of any parts that enter it and destroy them afterwards. It works okay, but seems to break and just stop working if a large number of parts enter the Region3 zone simultaneously.

Ideally, I would want it to destroy parts whose parent is workspace the way it already does, but if the parts are in a model, then I would like the whole model to go in one, but only if that model is fully inside that Region3 zone rather than just touching it.

I tried adding an else and defining a local h as hit.Parent and a local t as h:FindFirstChildOfClass("Part") and using that to destroy the whole content of a model, but this just made it break faster, and so did just destroying h.

This is what my script currently looks like:

Void = script.Parent

local RunService = (game:FindService("RunService") or game:GetService("RunService"))

local Base = workspace:FindFirstChild("Baseplate")

local Min = Void.Minimum
local Max = Void.Maximum


if not Void then script:Destroy() end

local Range = Region3.new(Min.WorldPosition,Max.WorldPosition)
local Ignore = {Min,Max,Void,Base}


while RunService.Heartbeat:Wait() do
    if Void.Anchored == false then
        Void.Anchored = true
    end

    local PartsInRange = workspace:FindPartsInRegion3WithIgnoreList(Range,Ignore,math.huge)

    for _,hit in pairs(PartsInRange) do
        if hit then         
            wait(0.01)
            hit.Transparency = 0.5
            hit.BrickColor = BrickColor.new("Maroon")
            wait(0.01)
            hit.Transparency = 0.55
            hit.BrickColor = BrickColor.new("Crimson")
            hit.Material = "ForceField"
            wait(0.005)
            hit:Destroy()
            hit = nil
        end
    end
end

I've tried, but I can't identify what's causing it to stop working. Sidenote: The spacing of my script is correct, but won't paste in here right.