Hello! Has anyone else experienced severely handicapped Safari performance on El Capitan lately? It seems to slow down significantly as soon as you open a few tabs, especially when some of them have flash content (Youtube etc.). Even typing is often not fluent. The problem is more pronounced when I have some other software running in the background, such as AutoCAD, Photoshop, 3D modeling software... I haven't experienced such problem before I upgraded to El Capitan. I'm currently running version 10.11.1 on a late 2013 15" MBP with 2Ghz i7 and 16GB of RAM (which should be plenty for some light multi-tasking.