Disturbingly slow file transfer speeds

[stuuuface]

I am trying to figure out why my computer transfers files/data EXTREMELY slow. When I copy something from my HP S750 1tb SATA3 SSD "560mb/s", to a 3.0/3.1/3.2 USB it only transfers at 15-20mbps for roughly 1gb of data then drops down to a sickening 2-4mbps. After the money I spent on upgrading my drive to SSD and buying a M.2 SSD and upgrading my ram to 32gb (EXPENSIVE) I was completely outraged when I tried to transfer some files and saw SLOWER speeds than the old hard drive could put out! 

I've tried some suggestions that I found on google like disabling anti-virus, clearing temp files, none of that stuff helps. Running a system speed test shows my drive reads and writes at 350-515mbps.

When I transfer files from my Samsung Evo M.2 SSD to my HP S750 it starts writing at 300mbps and goes up to 500mbps after a few seconds, but vice versa it writes at 50mbps and falls down to 10mbps after 1gb of data, and from the HP S750 to any USB or external harddrive it transfers 1gb of data at 20mbps then falls to 2-4mbps. 

The HP S750 reviews I read before purchasing said that it transfers at 500+mbps and does not do the speed drop after 1gb like all cheap drives do, yet in my experience I have not seen it get over 50mbps.

Anyone know why this is? How can I make it transfer at max speeds? See the speed drop here.Speed test.

[erico]

I thought about this and believe you are expecting too much from an older  mainstream laptop. The chipset bus speeds and installed processor are what is slowing down the data transfers on your laptop.

I performed a transfer of two Linux OS images from my boot drive to my external USB Type-c connected Western Digital back up drive. The files transferred at a consistent 80 MB/s. The specs on this desktop are far higher that your notebook. It does have 32 GB of installed memory and a Ryzen 7 3700X processor on an MSI Gaming Pro Mainboard.

Take a look at the transfer data for comparison. You will not manage this on a mainstream notebook. There is nothing

 you can do to even approach the bandwidth that the Crystal disk result of your notebook's boot drive C: disk shows consistently when transferring actual files between your storage devices.  That is just the unfortunate  tech truth with mainstream products when compared to top tier products.