I have applied the SQM cake (bufferbloat) module as described here: https://openwrt.org/docs/guide-user/network/traffic-shaping/sqm-details
Now, however, when using a VPN with obfsproxy, traffic is not getting through. The VPN is on a connected PC, not the router itself. Router is Linksys WRT1900ACS.
The VPN client connects but after that no traffic gets through. There is no error. If I configure the VPN to use a different protocol it works fine.