I have the same problem. After several minutes, it doesn't see that the computer is idle unless I open a terminal and type something in the terminal every several minutes.
I don't care about suspending the CPU because that doesn't lag my system. I do care about the GPU though. There doesn't seem to be a way to "nice" GPU processes to prevent CUDA projects from hogging the GPU.
I have the same problem. After several minutes, it doesn't see that the computer is idle unless I open a terminal and type something in the terminal every several minutes.
I don't care about suspending the CPU because that doesn't lag my system. I do care about the GPU though. There doesn't seem to be a way to "nice" GPU processes to prevent CUDA projects from hogging the GPU.