After flashing my router with OpenWRT I am noticing very slow speeds when I am connecting to VPN from my PC. I am connected using the wireless.
These are some tests that I have done so far to be sure that it is related to OpenWRT:
- When connected to VPN from my PC after flashing OpenWRT on my router the speeds I get are 1Mbps/~0.2Mbps
- Before flashing OpenWRT when connected to VPN the speeds were as expected 20Mbps/10Mbps
- When connected to VPN using my mobile hotspot (same PC just using mobile internet) the speeds are as expected 20Mbps/10Mbps
- When connected to the internet (wireless) without VPN my speeds are 283Mbps/50Mbps as expected.
My device is a Xiaomi Mi Router 3 Pro running OpenWrt 19.07.4 r11208-ce6496d796 / LuCI openwrt-19.07 branch git-20.333.25999-bf1b7d3
Someone suggested that it is related to MTU and that I should lower it?