Yup, I agree.
Well, unless your settings involve Skatter considerations, of course.
I see you have pebbles on the ground? is this where resides the skatter in your image?
Anyway, is the rendertime around 2h for a 1080p image? In this case, indeed your hardware must be a bit on the slow side or your setup needs optimization.
I haven’t used vray for ages now but for exterior images, I usually got nice enough results with much lower noise thresholds than 0.01 (like 0.05 but that depends on the complexity of the lighting and the textures) in max vray 3.4 (never tested 3.6) and earlier.
I usually crank down the noise threshold for interior views with no direct lighting and yet I use a photoshop mix with a denoise pass (render element) to get rid of some noise.
I agree that with powerful recent machines, Brute force primary and Light cache secondary gives fast and reliable results.
Yet for exterior views like the one you show, Thea is unbeatable speed/quality wise (and compatible with Skatter from the ground-up), but even more, Lumion 8 gives impressive results (I’d say a still image similar to yours in 1080p would take around 20 seconds in 5 star quality and perhaps around 5 minutes in 8k) but you need to learn an other soft again and of course it’s not given.
BTW is the truck imported from 3DWarehouse?
I did it (well, not 100% as I borrowed some parts, but it has some success) 