@John R. Cox,
I am not a native speaker of the English language so maybe I misinterpret your comment partly.
There is no consensus about the exact structure of the main quantum fields but at least there must be 1 scalar field and 1 vector field. The structure of the combined field - in relation to the volume of the universe - is fixed. Thus there are 2 kinds of alterations: alterations between the structure of the "solitary" fields and mutual alterations between both fields. An example of the latter is rest mass (energy from the scalar field - Higgs field - to the vector field).
Within the QF the transfer of an object from A to B isn't real. It is a transfer of "properties" within the structure of the combined fields. The "properties" have a discrete value (h) because the volume of the combined fields is invariant. Alterations within and between the fields are constant, synchronized and therefore topological. Not because someone likes the concept but because of mathematical/physics laws. So it is easy to understand why our universe is non-local and why the velocity of a local alteration (1 quantum) is the constant speed of light.
The total amount of topological deformation/alteration in our universe is constant. However, we see concentrations of quanta (e.g. particles) thus phenomena are the result of spatial transformations (invariant alteration). That's why a concentration of mass (e.g. a galaxy) is obtained from the "emptiness" around. However, when all the alterations are constant and synchronized every "grain" of the structure of the QF alters at the same "speed" and time ("grain" = spatial unit). Thus quanta transfer in space is conserved (like the main law of physics - the conservation of energy - shows). So there is quanta transfer everywhere in space, at any time and between every "grain" to/from adjacent "grains".
When we observe a local concentration of quanta (particle) the volume of the particle is just a small number of "grains" but the number of quanta (deformation) within the boundary is enormous. The transfer of the particle from 1 point within the structure of the QF to another point - that's some "grains" away - is limited to the speed of light. Now the transfer of all the quanta will last much longer so we say that the velocity of the particle is less than the speed of light.
So there is already a "quantum clock" and there are "quantum rulers". Relative time and curved spacetime emerge from the creating quantum fields. Relative time is caused by the decrease of internal alterations of a fast moving object (or by a strong gravity field) and curved spacetime is forced by the scalar field. It is the scalar field that influences the direction of the alterations within the vector field.
I hope that this comment covers your questions.