questions about BD degradation

[khanhnn00]

Hello, thank you for your dedicated work.
However, when I try to re-implement your complex degradation, particularly BD degradation model, I receive very high psnr on x4 scale. I'm in around epoch 70 and psnr is around 32dB. I validate on set5 dataset with the same way I created training data on DIV2K, which is adding noise to HR (i used cv2.GaussianBlur(hr,(7,7),1.6) ), then apply bicubic downsampling to it to get LR images. I am so confused about this result and I hope to get your comment on this to know if I am wrong or not.
Thank you.