As a start you should have the Pixel Composit node back to it's original settings. The real setting you need to change is resolution of the "Dither-Bayers_ThreeTone" node in the shader. The value it should be "render resolution x" devided by "x scale" divided by ten: which in your case would equal 25.6. However that will be very low resolution to start. So you'll probably want to multiply that value, but when you do so make sure you multiply the resolution value in the pixel composite node by the same value.
for example
| multiplier | x1 | x2 | x3 |
| shader resolution | 25.6 | 51.2 | 76.8 |
| compositor resolution | 100 | 200 | 300 |
I really should have written better instructions because I completely forgot to mention this part anywhere. These node groups are all almost entirely math based, meaning that there is usually an equation you need to reference when tweaking the settings. Something I should probably do is add some more parameters to the node groups so that they can do all of this math for you. these will be things to think about for the next update I make.
I hope this was helpful and feel free to contact me with any more questions.