Hi @jyezahn, thanks for contacting us. I can confirm that P3 Pro is compatible with the Creality K1 and K1 Max, but you will need to use Accessory Mode if the printer is unable to make a USB cable connection with Palette.
You can follow these instructions to import or create a printer profile in Canvas.
Regarding print speed, top speeds with P3 Pro are typically around 60-70mm/s, and potentially lower for prints with a lot of splices. You can experiment with our Slow Down While Splicing feature, which will adjust print speeds down only when a splice occurs. P3 Pro will not be able to print at the top speeds the K1 is capable of.
Let me know if you have any questions!