Makaveli
Very Senior Member
Experiment connecting to a different VPN servers then. Local servers will give you best speeds. On a 200Mbps ISP line you should be able to get >150Mbps on UDP. ExpressVPN has some fast servers around.
I had no good experience with ExpressVPN on RT-AC86U. It was about 2 years ago though. Asuswrt-Merlin OpenVPN client was not re-connecting and auto-connecting with their servers. Looks like the things improved now.
I was testing express vpn to a local server and was doing about 215Mbps last night going to test some more. I haven't noticed any reconnecting issues but then again i've only been using them for about 5 months now.