Checking the effect of resizing before processing

[gngdb]

We can speed up epochs further by resizing before processing minibatches on the fly. Unfortunately, this will result in a different final image, and it could be that it would be worse; more interpolated and blurred. This would affect performance.

We should run two models, with exactly the same settings and over the same number of epochs except one can resize before and one on the fly and see which performs better. Should also demonstrate speed improvements.