For qualified welding procedures, I do not believe that AWS D1.1 has a weave limitation.  For pre-qulified welding procedures, there is a maximum joint width that when exceeded, the weld must be done in more than one pass.  Since I don't have D1.1 handy, I can't remember the table (Although it should be in chapter 3)or guarantee the value, but I believe that for GMAW, you are probably looking at 5/8" in the flat position for joint width before the weld has to be broken into multiple passes.  If you have seen a 1.5X the diameter weave limitation, it probably applied to SMAW.  I have never seen antying that tight for FCAW or GMAW.  That doesn't mean it might not be out there though.

I am unaware of any code statement in D1.1 that prohibits the weave to 1.5 max.
There are statements that address changing from stringer to weave but as I understand it are primarily related to heat input.

Table 4.6 for instance will state the following under supplementary essential variables for CVN applications;

b) Weld Metal Volume--An increase in bead size, or a decrease in the length
of weld bead per unit length of electrode.

I believe it's a matter of whats qualified rather than actual technique. Statements in C5.7 would support this.
If you have qualified the technique, it passes all the required mechanical test, I don't see the problem.
As for how a weave is measured, that's often the subject of debate and little backing. The one constant is that all weaves are measured
as a factor of the electrode diameter, and not a function of the weld toe or center of the weld. I.E. .045 2 x weave = .090