Archer C7 v3 support

I installed openwrt 18.06.1 C7 V2 version on C7 V3, which has been used for 3 days and is perfect.
2.4 G signal is getting better, but 5G seems to start slower, and it's normal for use.
C7V3

I mean the startup is slower, but there is no problem with speed.
5G Link speed is 650Mps