horizontal deflection of non-loadbearing cantilever partiion

huangyhg

horizontal deflection of non-loadbearing cantilever partiion
can any one point me in the right direction as to where to find or some rational in setting a deflection limit for a non-loadbearing partition wall.  one key thing to this is the partition is hangng from the steel above.  the partition wll be framed with light-gage steel and sheathed will 5/8" gyp.  thanks for the insight!!
isn't the critical thing the deflection of the steel support ?
the deflection of the steel support is negligible.  the partition is being supported by large framing members.