Tailscale - low bandwith

Hello there,

Somebody use Tailscale VPN? I affect that in Zorin is really slow. The native bandwith about 100/100 mbit, but with VPN, max 10 Mbit. On same network and same notebook, different system (Ubuntu, Fedora) it about 50 Mbit.

It use Direct connection, not DERP relays.

Edit:

Hmm seems the problem the Samba share... with iperf3 the speed are good:

vamp@vamp-HP-EliteBook-840-G3:~$ iperf3 -c 192.168.31.102
Connecting to host 192.168.31.102, port 5201
[  5] local 100.80.94.126 port 53598 connected to 192.168.31.102 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec  3.53 MBytes  29.6 Mbits/sec    0    234 KBytes       
[  5]   1.00-2.00   sec  7.08 MBytes  59.4 Mbits/sec    2    331 KBytes       
[  5]   2.00-3.00   sec  3.72 MBytes  31.2 Mbits/sec  170    251 KBytes       
[  5]   3.00-4.00   sec  5.52 MBytes  46.3 Mbits/sec    1    285 KBytes       
[  5]   4.00-5.00   sec  5.46 MBytes  45.7 Mbits/sec    2    294 KBytes       
[  5]   5.00-6.00   sec  5.77 MBytes  48.5 Mbits/sec    1    306 KBytes       
[  5]   6.00-7.00   sec  4.78 MBytes  40.1 Mbits/sec  140    225 KBytes       
[  5]   7.00-8.00   sec  6.27 MBytes  52.6 Mbits/sec    0    266 KBytes       
[  5]   8.00-9.00   sec  7.14 MBytes  59.9 Mbits/sec    0    291 KBytes       
[  5]   9.00-10.00  sec  9.25 MBytes  77.6 Mbits/sec    2    309 KBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  58.5 MBytes  49.1 Mbits/sec  318             sender
[  5]   0.00-10.00  sec  58.0 MBytes  48.6 Mbits/sec                  receiver

iperf Done.

But samba copy:

Képernyőkép – 2023-08-25 16-26-05

I have never used Tailscale, but I did some searching on this based on your O.P.

Other users report very low speeds with direct connection over SMB.
The top question in most is "what is the latency?"
It seems you are correct in thinking SMB is where the bottleneck is.

Yes, possible that not the VPN are the "weak point".

i found this:

Edit: but it no so fast with cifs-utils... same speed, like nautilus.