Perfomance changes drastically with change in resolution

[Vikramank]

Hello, Thank you for the great work and code implementation of STEGO. Though it works great, the performance of STEGO is greatly affected with change in resolution of the input image. In some cases, the performance downgrades with increase in resolution. I'm unable to find the reason as it is unsupervised approach. Could you please share your insights on this observed behavior?
Best, K.Vikraman