TP-Link 1043nd OpenVPN max speed?

hello, i have tp-link 1043nd v3 with LEDE openwrt firmware. i am runing openvpn but my download-upload speed is just 11-12Mb/s....i need advice if possible get more speed with this router and how to configured? Thanks

That sounds pretty much what I'd expect out of that SoC, in short... use IPSec or WireGuard instead if you need faster speeds otherwise you need to get beefier hardware.