It depends. Some will, like all extended tests that are measured in combat rounds or IPs (like searching for hidden nodes, which goes faster in VR than AR, the same with hacking by probing, where in AR you are in days and in VR in hours).
But others will not. If you have to repair a car, there's only so much faster you can move to do everything. No matter how fast you are, if for instance you have to drain the oil, you'll have to wait until it's all out before you can refill it. And if you put the car on a bridge to do so, it will only go up and down with the speed of the bridge, not yours.