As a former cruiser owner, let me testify.
1) On your cruiser, you were sitting much closer to a windscreen that was nearly vertical and was very wide, so that all wind was directed way over your head and way out around the sides. It can get hot in the summer.
2) On your cruiser, you were riding much lower to the ground on a bike with no fairing. Now you are riding high and as the top of a sail, you will feel the cross winds and you will notice the turbulent air as you close in behind other vehicles, particularly trucks.
Alas my friend, it is the nature of the beast.
On the other hand, the handling of this bike makes your cruiser feel like trying to turn the Titanic. It gives new meaning to the word "twisty".
Having never ridden a sportbike before (only cruisers and clunky standards), I had no idea that a motorcycle could handle turns like this.
I saw the light when I ran into this guy with a GS Adventure, and he told me to take it for a ride. After that, I knew I was done with cruisers (I also knew I wasn't dropping 15K on a new motorcycle).
You should know that this guy had mucho problems with the stock windscreen on his GS. He found an aftermarket screen that works, although I didn't like it because the top edge was really vibrating and I found that annoying.
Here's what it boils down to:
The dualsport ergodynamics mean sitting tall off the ground (I really like it up there) and way back from the windscreen. Your head will buffet unless you find the setup that directs clean air into your helmet (as if you had no windscreen). Clean air in your helmet means lots of wind noise.
Wind hitting the helmet and wind noise are two things that cruiser riders with windscreens are not used to experiencing.
Personally, I think the VStrom is a nice enough bike at a nice enough price to make it worthwhile to keep searching for a solution to your problems.