The slowness persists after unplugging the eGPU.
Regarding overhead: Maybe some microseconds, but generally the eGPU greatly speeds up applications that depend on graphics. I regularly use it for highly interactive applications such as Rhino 3D, as well as for Adobe Camera Raw. eGPUs are popular for gaming.
The slowness persists after
The slowness persists after unplugging the eGPU.
Regarding overhead: Maybe some microseconds, but generally the eGPU greatly speeds up applications that depend on graphics. I regularly use it for highly interactive applications such as Rhino 3D, as well as for Adobe Camera Raw. eGPUs are popular for gaming.