Sync slow especially when upload an image

please help on this sync slow problem while uploading image from my phone, lately has been very slow, sometime take 30 mins just to sync 1 image, when the upload finished, i check my google drive, there are 8-10 image save under the same name with different sub id, ex., UniqueID.SiteView.0123456, UniqueID.SiteView.2345678, UniqueID.SiteView.3456789… and so on, which in my app where has only reference one filename like Customer_Images/UniqueID.SiteView.2345678 why are there so many file save under one input? where am i doing wrong?
Thanks for helping out!