Is there any way to scale the UI (especially for the Ribbon panel)?

Our company replaced all the AutoCAD with Draftsight and I have been using DS for two weeks and quite happy about it. But one thing really annoy me is the scale of UI (Ribbon tab and panel) is too big that with Ribbon Panel at the top and the command line at the bottom, half of my screen is occupied. Btw, my display setting (windows 10) is 150% on my machine as I am comfortable with this setting. I tried to reduce it to 125% scale in display setting, but meanwhile the Draftsight UI becomes too small to be read. That change from 150% to 125% is too much. Therefore I just wonder if there is any way to adjust the scale rather than changing the system display setting. In Autocad you can hide the Ribbon Panel but I could not find such function in DS. Thanks everyone in advance!