Impossible denoise times

Hi All

After updating to the latest version of Photoshop Lightroom (being V8.3). I have noticed after, the estimated denoise times have been displaying very inaccurately. I had 249 photos denoising last night. When the denoise slider was at 50%, the estimated time was 83 minutes. When the slider is changed to 100%, the time was 20 seconds. But actually took several hours. This bug is really annoying and majorly affects the way I denoise photos. Can this bug please be investigated.

System: Lenovo Ideapad Flex 5

Intel i5 1135G7

Ram: 8gb

storage: 512gb

operating system: Windows 10

Kind Regards

Cameron