I noticed this when I was watching a video and it started lagging just before until shortly after a download finished. The second time I monitored it using top
and the cpu rises above 100%.
My processor isn't a slow one (Intel Core i7-3630QM Quad Core), and the "average" CPU usage of Transmission is 3% - 4%.
I was wondering what the cause of this curiosity is and what I could do about it (besides using another bit-torrent client).