[maqjav]

Thank you semlar for your answer.

I modified the code like this:

local itemFrames = {}
for i=1, 5 do 
	local frame = _G.CreateFrame("Frame", "ItemFrame"..i, mainFrame)
	frame:SetSize(20, 20)
	frame:SetPoint("LEFT", (5+16)* (i-1), 0)
	frame.texture = frame:CreateTexture()
	frame.texture:SetAllPoints(frame)
	itemFrames[i] = frame
end

In my method I removed ClearAllPoints, you were right about it, and now I only set the texture using the reference.

function loadItems(itemsIds) then
	-- clear frames
	for i, frame in ipairs(itemFrames) then
		itemFrame:Hide()
	end

	for i, itemId in ipairs(itemsIds) do
		local _, _, _, _, _, _, _, _, _, itemTexture, _ = GetItemInfo(itemId)
		if itemTexture and i <= 5 then
			print("In the loop")
			itemFrames[i]:texture:SetTexture(itemTexture)
			itemFrames[i]:Show()
		else break
		end
	end
end

Breaking the loop with itemTexture nil is the idea, that's correct.

With this change I keep having the random behaviour, some times it renders the icons and other times it doesn't, however I can see in the chat the log "In the loop" as many times as items I have.

At least now the memory is not increasing like crazy, however... after some tests wow client crash with the next message: