When switching from onboard -> dedicated, the resources (textures, shaders, etc) to migrate will be quite small. There is no question of migrating resources fro

When switching from onboard -> dedicated, the resources (textures, shaders, etc) to migrate will be quite small. There is no question of migrating resources from dedicated -> onboard as that is never going to happen, unless .. again the resources are tiny. The context switch performance hit will depend on the other components on the board, but for a high end CPU/RAM/SSD combo, it wont be much. It will be equal to re-loading the all the browser tabs (for e.g. after a browser crashes).