What to do with the speed of the network card on the server?

Question

network hardware

All good health.
I've already broken my head and I can't figure out what's going on.
I have a DEPO server based on a Supermicro X9DBL-3F/iF motherboard. Windows
installed the driver:

Everything is fine, they stand and work, but the trouble is, something is completely wrong with the speed: I


upload files to this server, from any of the 3 servers, and any, large, small, network cards behave the same way.
At what both network behave so. The speed will say up to 600-800 Mbps and drop to zero.
Moreover, if you download from the Internet, say via a torrent (yesterday I downloaded a movie in PLEX 17GB), it downloads quickly at a speed of 100Mbps, as the provider gives.
I can't understand what's wrong.
I installed another network, Intel PRO/1000, the situation is exactly the same.

I tried to download drivers from the Intel website, I'm trying to install it, it swears that the type of device was not found.
I tried to download the drivers from the suopermicro site, I put it, the situation is the same, it does not find the network card ... But I'm somehow connected to the network ...

In general, I don’t know what to do with this.

Sometimes traffic stops altogether when loading:

Answer 1

In general, colleagues, I seem to have found the reason.
The reason seems to be in the disk subsystem, or rather, the disks themselves. rebuilt the array in RAID0 of 7 disks and the speed has grown. Now there is a "saw" but not so fierce and the recording is not 5-8 MB / s, but 45-50.
Apparently my WD RED lit up. It's a shame, they were good wheels ...

Answer 2

The first thought that comes to mind at the sight of such a "saw" is that downloaded at such a speed does not have time to record. Those. downloaded into a buffer at high speed, but while it is being written to disk, the download stops, it is recorded - it downloads again, etc.

Answer 3

you can not read further depot and supermicro - you bought yourself a headache, live with it. continue import substitution and buy wretched. and write your questions in support of the vendor - they got your money for this.