Steven, Tawe does have an upper size limit and will scale when that is hit. It's really designed for a single image at this point
Thanks Barry, that's what I suspected.
In hindsight, I was trying to put about 20 full size screenshots together in a single image, which is quite a lot.
As a workaround, I made much smaller images with 3 or 4 screenshots per image and Tawe'd each smaller image separately. That worked great for me, I got full quality, and my content worked better logically broken in to 3/4 screenshots at a time.
I am trying out Tawe and love it so far.
One issue I am having though is creating a tawe with multiple images. I have tried pasting a number of screenshots together in one big image(1600X8000), but find the quality drops a lot. It seems like Tawe scales the image down and back up when it opens.
Is there a better way of doing this?