Good observation, well remembered. 
	When the CPU is overloaded the GPU and its memory are also overloaded. I will pay attention to the GPU resources.
 
	My GPU is Intel(R) HD Graphics 4600 (HSW-DT GT2), 1200MHz, 80 cores, 20 CUs, Driver 20.19.15.4835 
	Graphic adapter: Intel Haswell-DT GT2 - Integrated Graphics Controller
 
	Windows Task Manager without processor overload: 
	Dedicated Memory: 0.0 / 128MB 
	Shared Memory: 0.5 / 2GB
 
	Regards 
	GTI