Dear Kellan

in general cases, QE gives binding energies in very good agreement with other codes and also very comprable to experimental values. you shoud take attention which pseudopotential used and also if spin-polarization is needed. moreover, if your structure is a magnetic structure you should take care for FM or AFM states.

In addition to Dr. Lahmer's suggestion, you should also look at if correction to vdW forces is there or not. Grimme's D3 dispersion correction is often used which provides accuracy. If none of these improve your results, take non-hybrid functional relaxed structures and run the final SCF with a hydrid PBE0 functional. Since there is not much detail about the system and calculation setup from you, its difficult to answer any further.