I have my electric basses strung with Thomastik-Infeld jazz flats and have had absolutely no problems with them, including stickiness; alas, any problems with speed reside with me.
My upright basses are also strung with TI flat-wounds, and I've found that even after playing upright to the point of near-exhaustion, playing just about any electric bass, irrespective of the strings or action, is comparatively fast and easy.
