Odd cooling fan behavior

Hi All, New to the forum and looking forward to spending some more time here. I know the part cooling of the 2.0 is less than stellar but until recently ive not really had issue as i dont usually print models with large overhangs. However, Ive noticed lately that when the part cooling fan is turned on such as with an M106 S255 the fan fires up and for a few moments runs at an acceptable speed and is being provided a voltage of 24.17V. After a few seconds it seems to slow down too what, audibly, seems to be about 50%. However the voltage remains constant. Just seems odd to me as the fan is free moving and doesnt have a lot of hours on it. I will order a replacement but was curious if anyone else has experienced anything similar.

Thanks,
Mike