On my non-standard install of tailscale on the MT1300 beryl How to get Tailscale working on the Beryl MT-1300! I cant get much more than about 1-2 MB/s aka 8-16Mbs. CPU usage on the beryl jumps around at about 40-60% during those speeds. On wireguard I got much faster speeds
4.3.6 RC 1
iperf3 -s Test 1 is direct tailscale connections, test 2 is direct wireguard
Currently glinet is running version tailscale version 1.32.3-1 (OpenWrt)
However in version 1.40 tailscale claim to be faster than native wireguard.
Edit: I manually upgraded to tailscale 1.44 and unfortunately throughput was only slightly faster. 20Mbs or so.