Turbulent parameters α_acc and α_mix in our fiducial 3D model. Our 2D results from Fig. 3 are shown in blue curves. The total stress in the disk is shown with solid curves, while dashed curves isolate the contribution of the VSI. While increases slightly, decreases such that . This happens due to the stronger accretion stress supplied by spiral arms that in fact weaken the VSI, which is the primary driver of vertical motion. The bottom panel is calculated at the radial location shown by the vertical line in the top panel (here, R = 1.4R₀).