So my cpu usage is very high when watching things like twitch https://gyazo.com/c10fe1608e080715a56cbe9c353766da. When i try to play a game and open twitch or youtube etc on my 2nd monitor my game starts lagging real bad and the cpu usage sometimes goes to 90%, I have seen/heared other people with even worse specs then me not having any problem with programs like twitch open on the second monitor while playing a game, so why am i having trouble?
PC SPECS:
i5-4590
MSI GTX 1070 8GB
1TB RAM
128GB SSD
ASROCK MOBO

PC SPECS:
i5-4590
MSI GTX 1070 8GB
1TB RAM
128GB SSD
ASROCK MOBO