SDL 2.0.4, MacOsX and 32 Bits: bad sound, bad render

Hello,

I'm working on the MacosX build of Hatari (https://hatari.tuxfamily.org/).

While trying to make an universal build (32/64 bits), I have some
problems when running in 32 Bits mode:
- bad sound (crack/noise)
- bad render (looks like screnn is aliased, which is not supposed to
be). Screen have a little black border that do not appear while running
in 64 bits mode.
- very slow rendering.

The sound problem may be related to the 2 others, as Hatari look like
slower in 32 bits mode.

It work perfectly in 64 bits mode.

It's SDL related, because when building with 2.0.3, it works (but bugs
in SDL 2.0.3 build of SDL on MacOsX prevent the use of 2.0.3, such as
mouse capture, full screen, etc).

It came in the 2.0.4 sources, some months ago, but cannot say when
exactly.... One people have some working 2.0.4 sources, when he used
them, it's working well.

Any help ?

JV