At my level (mostly rank 4 legendary mechs) , Volti is only a menace in hangar showdown. And yet even there I am learning how to deal with it and in fact these last few days have had a greater than 50% success rate against it. 

I think in the current game nothing is so OP that it needs a nerf. The only exception might be compound beams. Not sure about tailsting since I haven't faced it much.

Have you got a decent amount invested in canopy mods? Have you got seeker? If the answer to one or both of those is yes, your experience with volti will probably be a lot different from mine. Also seeker is super braindead itself.

Hangar showdown is already luck based most of your matches are going to be a tossup anyways

Even still SP tankers use it too.

Volti using SP tankers are among the tougher SP tankers to kill because like I said before Volti can target stuff with its ability through walls. A damaging ability. And it's not a teleporting ability like seeker so it takes exactly 0 risk to itself. And it can be used at 100+ meters.

You say there's nothing too OP that it needs a NERF but I say nothing, and I mean NOTHING, should have a 100+ meters damaging ability that can target opponents through walls. It takes 0 skill to use and you basically get tons of free damage.

Or maybe they should rework volti instead so it applies the oracle status effect to itself when it uses its ability so it becomes much easier to locate and flush out of cover.

Volti needs to either not have its ability go through walls, have its range NERFed, or have some kind of punishment for using its 0 skill 0 risk free damaging ability