So I have an old hp dc7800 ssf with a core 2 duo 2.33ghz with intel acceleration 3100 integrated gpu and 2 gigs of ram which I used when I was a kid and then I left it in the storage for 5 years yesterday I dusted it off and did a fresh install of windows and installed the drivers. But the issue is that it lags while playing 60fps youtube videos so my question is should I install a cheap gpu like a r5 240 or gt 730 or upgrade my cpu to a core 2 quad I only need it for streaming youtube videos.