in attempt to troubleshoot this I started with non fragmented 3D text and slowly worked up complexity. Things seem ok with a few fragments – although all final character smoothing is lost – the final number does not affect the render smoothing much if at all once frag is applied- (reduces smoothing of the entire object tract). Frag deleted or turned off and character smoothing returns, but issues develop in UI…
So a simple 2×2 frag seems ok, go up to 4×4 slices and the UI hangs and then Object track names are lost in tracks below the frag track and at least one CPU core seems fully occupied as the UI hangs unresponsive at animation playing, ProAnimator standalone crashes at render movie in this state