How much movement can this stuff take?

I've tiled our just-built utility room with some Unibond flexible adhesive,
and grount, designed for wood floors and it's fine, and now I'm working in
the bathroom and I want to use the same stuff.
The kids bedroom is next to the bathroom, and the rooms are seperated with
an airated concrete block wall built on the floorboards. Since I've been
working in there, I've noticed the floor has some 'bounce' to it if they
are bouncing around their bedroom (as they do often). Joists are a 12'
single span with these two rooms above. The block wall appears to be fine,
with no cracks in the mortar.

Will I be getting into trouble with the tiled floor at a later date or
should this adhesive cope with that?

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