Preparing to apply armature: subsurf?

Hello, I apologize if this is a stupid question, but I was wondering should I apply my subsurf modifier before I apply armature to my model? I know that if i subdivided it, it would slow it down to the point that I can barely move any bones, so would subsurf be an alternative?

Thank you

Avoid it if you can. Makes it easier to adjust the weights if you need to and outer things like Uv maps it keeps things simple to avoid applying.

You shouldn’t apply either of them, just use them as modifiers, with the Armature modifier at the top.