How long is it before a support ticket is handled usually?

If you're talking about user reports and the like, i do know that, at least a number of them, are marked by a support to watch a user, and since the issue hasn't been "resolved", it won't be marked, but is being dealt with. Also, if multiple users report the same issue, not all tickets regarding the same thing will be closed, even though it has been dealt with as well. I recently went through mine and closed myself the ones which were resolved, but not being marked so by support..

I've seen people get it changed within a few hours, I'm sure it's the same as any other request, and handled as fast as they're able.

The only things that seem to get notably delayed are user reports and change requests related to an account's information- staff has indicated only a very small handful of them [namely Rinarin and CG] can address such concerns [and has recommended we use Request New Winner and Other categories for general concerns, as is more suitable, as all staff can see those categories. It can be inferred from that, that all other categories will be delayed in response].

since this seems to fall under that purview, a fast response isn't to be expected.

Well, negative rep related tickets are often mentioned here as neverending stories.