Extremely wrong time estimates

[Luten]

Similarly, I have. On K1C.

Creality Print 5.0 - wrong printing time

Maybe try using and checking out Orca Slicer. I, after many attempts with CP, gave up. I reported my problem to support, but nothing solved the problem. I mean nothing, no matter what version of CP or trying to (supposedly) update the nozzle settings for K1C. Eventually I started using Orca Slicer and since then everything is fine. In addition, I noticed that the quality of prints is better than in CP. I don’t know why, but it is better.

Honestly, I gave up and started using Orca Slicer - you might also try. Since then everything is fine. I suppose the problem is the firmware version of the printer and not the CP itself.