This is a sick spot and it depends on how "good" the TAG is.
If we assume he is competent, then he should NOT be calling a decent preflop raise with Reverse Implied Odds hands like KQ or KJ or KT. So his preflop calling range should be pockets set mining, AK, and "maybe" AQs, AJs, ATs.
Come flop, when he limp calls, this narrows his range of hands to AK, TT, 66.
On the river, the only hands that c/r river here are boats and quads. AK isn't c/r'ing river when the Q hits.
So as sick as it sounds, if V is a solid competent TAG then we should actually fold this river
simply because there really isn't enough in V's range that he shows up here with that we beat. ANd similarly, there are no draws in his range in this spot that could bluff the river. The only draws that could be in V's range on the flop are gutter ball AQ and AJ draws and I seriously doubt he's calling flop bet with a gutter ball draw if he is "competent" as you describe. So yeah, I expect V to show up here with TT for the boat or some sicko 66 quads most of the time in this spot when he c/r blasts you on the river.
The only other way you can call here is if you feel V has been purposefully floating you merely to bluff you off of rivers with airballs. If somehow in your mind you see V as a big action aggro floater and bluffer than sure we can call. But there is nothing in your OP indicating this so this is a fold.