Suddenly when I try to transfer files from my computer to my NAS, the speed goes from 2 MB/s down to 700kB/s and its bouncing between those speeds.

My setup has 1 GB/s, and I have had that speed before, but now it's unusable. I use 2 14 tb HD's and one 2 TB nvme for caching.

I have tried to switch the position of the drives in the Jonsbro N4 case without any changes.

nas-smart-20260622-2104.zip nas-smart-20260622-1820.zip nas-smart-20260623-1828.zip

Edited June 23Jun 23 by Rabalder

Please post the diagsotics during a atransfer, also post the results of a single stream iperf test in one direction, then the other one (-R) to rule out a network problem.

Here is diagnostic during a single transfer from my pc to my NAS.

nas-diagnostics-20260623-1951.zip

This is one during a 4k stream. The stream keeps buffering.

nas-diagnostics-20260623-1956.zip

C:\Users\Raba\Downloads\asasd>iperf3 -c 10.0.0.25

Connecting to host 10.0.0.25, port 5201

[ 4] local 100.80.152.29 port 63533 connected to 10.0.0.25 port 5201

[ ID] Interval Transfer Bandwidth

[ 4] 0.00-1.00 sec 1.12 MBytes 9.44 Mbits/sec

[ 4] 1.00-2.01 sec 1.50 MBytes 12.5 Mbits/sec

[ 4] 2.01-3.01 sec 1.38 MBytes 11.6 Mbits/sec

[ 4] 3.01-4.00 sec 896 KBytes 7.39 Mbits/sec

[ 4] 4.00-5.01 sec 1.12 MBytes 9.32 Mbits/sec

[ 4] 5.01-6.01 sec 1.25 MBytes 10.5 Mbits/sec

[ 4] 6.01-7.00 sec 1.00 MBytes 8.45 Mbits/sec

[ 4] 7.00-8.01 sec 640 KBytes 5.19 Mbits/sec

[ 4] 8.01-9.01 sec 768 KBytes 6.31 Mbits/sec

[ 4] 9.01-10.01 sec 768 KBytes 6.33 Mbits/sec

- - - - - - - - - - - - - - - - - - - - - - - - -

[ ID] Interval Transfer Bandwidth

[ 4] 0.00-10.01 sec 10.4 MBytes 8.70 Mbits/sec sender

[ 4] 0.00-10.01 sec 10.0 MBytes 8.38 Mbits/sec receiver

iperf Done.

C:\Users\Raba\Downloads\asasd>iperf3 -c 10.0.0.25 -R

Connecting to host 10.0.0.25, port 5201

Reverse mode, remote host 10.0.0.25 is sending

[ 4] local 100.80.152.29 port 63600 connected to 10.0.0.25 port 5201

[ ID] Interval Transfer Bandwidth

[ 4] 0.00-1.00 sec 1.51 MBytes 12.6 Mbits/sec

[ 4] 1.00-2.01 sec 2.44 MBytes 20.4 Mbits/sec

[ 4] 2.01-3.00 sec 2.99 MBytes 25.3 Mbits/sec

[ 4] 3.00-4.00 sec 2.73 MBytes 22.9 Mbits/sec

[ 4] 4.00-5.00 sec 2.76 MBytes 23.2 Mbits/sec

[ 4] 5.00-6.00 sec 2.75 MBytes 23.0 Mbits/sec

[ 4] 6.00-7.00 sec 2.75 MBytes 23.1 Mbits/sec

[ 4] 7.00-8.00 sec 2.06 MBytes 17.3 Mbits/sec

[ 4] 8.00-9.00 sec 3.34 MBytes 28.1 Mbits/sec

[ 4] 9.00-10.00 sec 2.74 MBytes 23.0 Mbits/sec

- - - - - - - - - - - - - - - - - - - - - - - - -

[ ID] Interval Transfer Bandwidth Retr

[ 4] 0.00-10.00 sec 29.9 MBytes 25.1 Mbits/sec 38 sender

[ 4] 0.00-10.00 sec 26.7 MBytes 22.4 Mbits/sec receiver

iperf Done.

C:\Users\Raba\Downloads\asasd>

I removed tailscale from my plugin, and it seems to have solved the issue. I must have done a bad job setting tailscale up.