I have an identical setup and the app looks pretty much the same on my end. It would seem this is the expected look on these settings. To remedy this somewhat, you can also grab the lines between the different elements in the app and drag them left and right to make the two sidebars bigger or smaller. You can use this to adjust how much you see of each section and allow more content to be shown in the middle. You can also try using 125% scaling instead of 150% as that seems like a healthy middle ground between both options.