Strange Lerp Behavior

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#1

Hello, I recently came across a strange behavior of lerp, I understand that the error is 100% on my part, but I still haven’t figured out what the problem is.

Part of the code responsible for moving:

-- Local script
-- Core == Pet
RunService.Heartbeat:Connect(function(dt)		
	local lerp = 1 - .07 ^ dt
	
	for plr,plrCore in pairs(PlrTableCores) do
		local char = plr.Character or plr.CharacterAdded:Wait()
		local count = #plrCore
		
		for i,core in ipairs(plrCore) do		
			local angle = i * (2 * math.pi / count)
			local x = math.cos(angle) * ((count - 1) * 3)
			local z = math.sin(angle) * ((count - 1) * 3)
			local NewCframe = CFrame.new(x, 5, z)	
			
			core:PivotTo(core:GetPivot():Lerp(char:GetPivot() * NewCframe, lerp))		
		end					
	end	
end)

Video:

#2

The strange behavior is that “Pet” is shaking