I manage a group of remote laptops that don't need any type of security and are designed to do only one function. Upon hearing that the Meltdown/Spectre fixes from MSFT slows down PCs, I used various means in the group settings to stop any and all updates. Basically the Windows Update appears, but then the user just minimizes it and does nothing with it. As they are, the PCs function fine. I don't know how long we can stall MSFT, but right now its working well. My question is this: have the Meltdown/Spectre updates been perfected at this point so that it does not interfere with the operation of the PC or slow it down? Any decrease in performance is unacceptable. Thanks!