Laptop cooling pad Low RPMs

My laptop cooling pad that I got a couple of months ago (basically new) sounds like its not hitting the RPM that it says its at on Synapse4. I cleaned out the dust screen even though it was pretty much clean already and it didn't change anything. I haven't seen anything about others having the issue, and it still keeps my laptop from overheating so its not a big problem i guess. but im wondering if any of u guys have had this issue or heard of this issue and know how to fix. i dont want to have to get a different cooling pad because chroma but if the issue keeps getting worse im not blowing another 150 on a new razer one.