Poorly made workflow for tiled image upscale.
Seedvr2 is by far the best upscaling model I’ve ever tested. What I tried was using xCaYuSx workflow to upscale an image instead of a video. The only downside is that, with the 24 GB of VRAM I have, the enlargement is limited to around 2000x2000 pixels. The good news is that, thanks to its excellent consistency, you can split the image into tiles and then reassemble it. I’m not very skilled with Comfy, and I've only done half the work, maybe someone could build on it and automate the tile stitching. Personally, I just glued them together in Photoshop. The entire process took about 5 minutes on my 3090 for 16 tiles. The upscaling achieved is around 950%.
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Original thread and workflows