Well if I try to generate 64x64 images, it uses all of my 3GB vRAM in my laptop. I don't know how much vRAM you have but you probably need at least more than 2GB to make it even function. But you might also need some newer features added to newer GPUs.
I can generate 320x320 images with my GTX 1050 mobile and 3 GB of vRAM, but it is still soooo slooooooooooow to generate something like a minute or so. I'm afraid you are out of luck with this kind of technology, I don't know about the Patreon version though. This software is really meant more for modern desktop GPUs where you can easily generate big images in the matter of seconds. But you can generate some images using StabilityAIs official demo here: https://huggingface.co/spaces/stabilityai/stable-diffusion
you will wait for the results a bit, but it will work. (most of the time anyway)
Btw. 64x64 will generate just some random streaks of color, at 256*256+ you can get low quality but somewhat decent images.