Agree with the other comments here. Just putting on a slip-on will affect the engine performance. Personal example with a Hornet SP 1000: Bike lost low end torque and would stall without gas. Before releasing clutch felt smooth without gas. Had to remove plastic panels, remove the gas tank, to get to the ECU. ECU shipped for tuning. Then had to remove the airbox. Remove the intake snorkels, disconnect the O2 sensors, plug PAIR intake hose. Put everything back together. The throttle is very smooth, and bike has close to 150 horsepower. In my opinion keep it all stock or go the full way with a tune and full exhaust. I am waiting until there is a good header exhaust for the hornet.

Looks like you're going way too fast for lane filtering. My advice is no higher than 5 mph then the traffic around you. Cars cannot respond that fast.

I think drops like these happen for one reason, and it comes from being a car driver first. What is the first thing you do when you panic in a car? You press the breaks. Now you are on a bike, and you start to feel that you are falling when handlebars are turned right. How will pressing the front brake help you regain balance? This will make you fall faster. Its counter intuitive, but you have to give throttle instead.

Welcome! Vstrom is a good ADV bike.