css - Font weight turns lighter on Mac/Safari

Question

On my last website, the text is perfect naturally on chrome and firefox without touching font-smoothing or anything else.
But on Mac / Safari 7 the text appears well then turns immediately thinner (too much thinner / not nice to read).

After doing some research [cf http://www.usabilitypost.com/2012/11/05/stop-fixing-font-smoothing/]
and some tests playing with

-webkit-font-smoothing    

It looks like Safari display the text first with :

-webkit-font-smoothing: subpixel-antialiased;

Then just after you got the flickering effect, when it is turning font to :

-webkit-font-smoothing: antialiased;

So it seems to me that I had no choice but to force

-webkit-font-smoothing: subpixel-antialiased;

to make my website consistent on all browsers.
I am using font-face Avenir Std Roman.

Some explanations to that Safari problem ? Any better solutions ? Could my font be part of the problem ?

Thanks.

Answer 1

So I fixed my problem with applying:

body {
    -webkit-font-smoothing: subpixel-antialiased;
}

Now my font is consistent on every browsers.