Maya offloads the processing of certain deformers to your graphics processing unit (GPU) for increased playback performance.
GPU Override is active by default in Maya, however if it is disabled you can turn it on in the Animation (settings) Preferences.
The following deformers have GPU support:
- blendShape
- cluster
- lattice
- groupParts
- Nonlinear deformers
- skinCluster
- softMod
- tweak