Very janky tweens

are tweens broken as of now? cause this just started happening to me and I don’t know how to fix it. The spotlight tween works fine, but the transparency tween doesnt work.

https://gyazo.com/771d7a72dd17992d9842809f5a4694ea
example ^

			local t = TweenInfo.new(flash_rate / 1.5, Enum.EasingStyle.Linear, Enum.EasingDirection.Out, 0, false, 0)
					
			local t1 = TweenService:Create(lights.LeftInd.FN, t, {Transparency = 0})
			local t2 = TweenService:Create(lights.LeftInd.RN, t, {Transparency = 0})
			local t3
			local t4
			
			local i = 0
			
			for idx, child in pairs(lights.LeftInd:GetDescendants()) do
				if child:IsA("SpotLight") then
					if i == 0 then
						i = i + 1
						t3 = TweenService:Create(child, t, {Brightness = 2, Range = 16})
					else
						i = i - 1
						t4 = TweenService:Create(child, t, {Brightness = 2, Range = 16})	
					end
				end
			end
			
			t1:Play()
			t2:Play()
			t3:Play()
			t4:Play()
			
			wait(flash_rate)

What is wrong with it exactly?

look at the gif, the spot light that flashes works perfectly fine. the part transparency flickers, this was working fine beforehand

What did you set FlashRate to equal?

0.25 divded by 2.5, which 0.1. even at that speed i dont think it should be flickering like thay