Try making it a floater. Duplicate your main mesh, cut out a strip of polys from it and add your crease on that piece instead, so the main form flows how you want it.
Making it a floater seems to work the best, thanks a lot! I cheated my previous hard surface models with ndo2, but I want to learn how to do proper hard surface modeling. Ran into a similar issue with another part of the model and found a cheap solution with tri/ngon. Actually this still has a small smoothing artifact but…