Thank you for help) it work. But now cuda is out of memory. Maybe after adding this critic_loss.backward(create_graph=True) optC.zero_grad() don’t clear all calculates (I thought about gradients and gradient_penalty). Error looks like
CUDA out of memory. Tried to allocate 50.00 MiB (GPU 1; 11.17 GiB total capacity; 2.37 GiB already allocated; 18.06 MiB free; 60.63 MiB cached)\\

I find one solution - decrease batch size.
My batch_size was 1e5, and now I decrease it to 10 (just for check assumption) and its work, but why i want to understand why this error happened.