Img2Img using Invoke
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img2img using invokeai
Original image made with meinamix v9 at 512x512, new image made at 0.2 strength and 896x896. The higher resolution you go, the higher the LoRA can go, if you try to do over 0.5 at 512x512 you'll just get a mess.
The more steps the cleaner output I got, but there's a cap, 200 steps made it look bad. 150 was still better than 120, but it depends on the resolution as well.
Got better results with DPM++ than Euler.
Overall this was the best result I could get using img2img. Pretty clean.