Unbearably slow and laggy Safari on El Capitan

roksraka

macrumors member
Original poster
Dec 9, 2012
68
80
Slovenia
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.
 

Ebenezum

macrumors 6502a
Mar 31, 2015
782
259
I am not certain it's only Flash. I don't have Flash installed and I'm having similar issues even without extensions. It doesn't happen in Yosemite or Mavericks Safari so I suspect there is a bug in El Capitan Safari or in the Webkit.

I haven't been able to fix it despite doing all usual troubleshooting steps. Since I currently use El Capitan only for test purposes I am content to wait until Apple fixes the problem.
 

simonsi

macrumors 601
Jan 3, 2014
4,849
716
Auckland
Well ypu referred to Flash content...? Are you saying it slows down, especially on pages with Flash content even if you don't have Flash installed?
 

ceezy

macrumors member
Sep 30, 2011
92
6
10.11.1 worked brilliantly for me, when I updated to 10.11.2 I started having a bit of the lag issues/beachballs you describe in Safari (and overall). Tried a few different things like disabling what few extensions I had, freeing up more HDD space, and closing some other programs (itunes/spotify) and it seems like it is running a little bit better now, but I am still trying to work out the kinks.

Still trying figure out what caused (or are causing) some of my issues from .1 to .2
(mid 2010 MBP)
 

realeric

macrumors 65816
Jun 19, 2009
1,024
1,248
United States
I have the same issue. Safari 9 lags ... Google maps doesn't work well and also ping is too slow. See the speed test result. Safari gets 29ms ping vs Chrome gets 1ms in the same computer.

safariisntsnappier.png