There's a patch to enable Qualcomm FastPath in LEDE, this offloads simpler TCP and UDP traffic from the Kernel stack and gets me 960Mbps LAN to WAN on a Netgear R7800

For some years, OpenWrt has arguably
been the most active router-oriented distribution.
Things changed in May of last year, though, when a group of OpenWrt
developers split off to form the competing
LEDE project. While the LEDE
developers have been busy, the project has yet to make its first release.
That situation is about to change, though, as evidenced by the LEDE v17.01.0-rc1 release candidate, which
came out on February 1.