Youtube slowing down 2011 Mac mini

hi,

i've noticed large decrease of performance when open , buffer youtube clip. slows down , computer doesn't react input until clip has loaded properly, on 360p clips.

know youtube can demanding, , i'm running 2.3 ghz i5 8 gb's of ram. other safari, i'm running mail, skype , numbers in background. doesn't seem matter if close other programs or not. have between 3-4 gb's of ram inactive , <1gb free according istat pro. cpu usage doesn't seem spike while buffering/opening youtube.

have solution problem?
thanks!

 

try hard wire internet connection if doing wifi may help.

 

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