Before I begin, keep in mind that when I say "Windows 10", I do not mean this is a bug in "Minecraft Windows 10" version. This is a bug in the normal Minecraft.

Alright, so what happens is, whenever I turn on ANY resource pack, the game has a lag spike every 15 or so seconds. It does not matter whether I allocate more memory, reduce my settings, or anything. However, right when I turn off the resource pack, it's perfectly fine. My computer is pretty good and can run Minecraft at well over 150 fps constantly, so I have no idea why this happens. Also, whenever I do have on a resource pack, in the amount of time before the lag spike, I get normal fps.

Next, this only happens in Windows 10, I reverted back to Windows 8 and it worked fine. No problems at all.

P.S. I have updated my graphics drivers, allocated more memory, etc.