I use a laptop for GM stuff and a computer hooked up to a big screen TV. We use Roll20. It's amazing; I can't recommend it enough! It's compatible with 13th Age and many other systems!
This screen?
https://www.amazon.ca/13th-Age-Screen-Resource-Book/dp/190898323X/ref=asc_df_190898323X/?tag=googlemobshop-20&linkCode=df0&hvadid=337125595101&hvpos=&hvnetw=g&hvrand=11488438161837743042&hvpone=&hvptwo=&hvqmt=&h...