How much polys you got here before and after the turbosmooth ? 3 Iterations of Turbosmooth seems unnecessary high I hope you got the symmetry modifier BELOW the turbosmooth ? If you want to keep that iteration count, simply work with less in the viewport ( there are specific iteration settings for rendering and for…
It's meshsmoothed and will display with 2 iterations when rendered. For smooth viewpoint rendering the meshsmoothing is not displayed in the viewpoint.