Vertical velocity in the midplane of the VSI disc after 198 orbits with embedded planets of different mass. Upward motion is indicated in red and downwards motion in blue. Larger planets clearly disrupt the usual VSI modes close to the planet. In the last panel (100 M_⊕ planet) vortices are visible at both sides of the planet. Also visible in the last panel is the more extended VSI activity near the inner boundary compared to the other panels.