Resizing the browser window seems laggy, the background transitions to the new size with a white background, maybe speed up the animation? also, the most used sites line has a static length and position with the new update. If the browser window is only half as long as on initial setup, only half of the sites will be shown, the rest is hidden because the window is not big enough.
Currently when you move your Crhome Browser to a bigger 2nd screen or monitor, the widgets don't scale properly and could potentially fall of the screen or appear in a less convenient place. It would be great if a solution could be found for this.