HP slimline

Hi all,

New to forum so excuse me if this is posted in the wrong area.I was just wondering if anyone had any suggestions on possibly setting up my hp slimline 260-a010 for better performance? It has an i4 and 4gigs ram and win 10. My main gole is to run kodi and piggy back off my xbox one that is used on my main screen in another room.

also for bonus points….i am having an imopossible time getting my screen resolution to fit …(42 in 4k)