NVME SSD HDD Premiere Pro CC / NVME experienced people around?

Hey dear Fellowship of the Media,

I have my OS Windows 65bit on a 256 GB Toshiba

I set up my Project, Media Cache and Scratch all onto my emtpy 512 GB NVME (212GB left) It is a Samsung SM961 512 GB

Is this smart? (I followed some guides on the internet.) Should I try different combinations?

I got another 1 TB HDD for other Software and Clips.

I promised myself a huge boost from installing the NVME. Before today I edited on my 7200RPM HDD.

I cant say I notice a difference. I have a Ryzen 1600 a B350 Gaming Pro Motherboard.

Did I do something wrong?

If I benchmark my Nvme the read and write speeds are amazing. 3.3 Gb/s and 1.8 Gb/s.

If i copy however something from my nvme to my SSD or vice versa i get write speeds of 60 mb/s or 130mb/s. (It peaks to write with 1.3GB/s and then dropps to 600Mbs to 400 and stays very low at 120Mb/s.

What might be the bottleneck for my NVME Drive? Are there Drivers that I need to install?

I ordered a heatsink for my nvme since it does get a little hot. But that can't be it.

I would really appreciate some help. My project is due very soon and I promised myself a huge boost with this new heavy purchase.

Thanks in advance for any suggestions.

best regards

J

[Moderator note: moved to best forum.]