Is there a way to use wireguard as a non-encrypted VPN?

[mike]

I have some older routers that run OpenWRT just fine, but are a bit slow at
Wireguard (3-5 MBytes/s for SMB transfers) and which are too slow for
playing HD movies.
For these routers/uses I don't care about security, I just want a VPN to
tunnel (thru Comcast, and other ISPs that block lots of ports.)
If there was a way to use Wiireguard with encryption disabled, I'm pretty
sure my performance would be closer to 20-50 MB/s which would be more than
adequate.
Thanks.
Mike Farmwald