Bro, at the RC4 I have same issuel at my MT7621
Was a little bit hesitant flashing to the newer version, but hey rc4 
, successfully flashed: Archer C7 v2 v19.07 -> 21.02 rc4, running wireguard, automigratition to the newer networkconfiguration went fluently. Keep up the good work!
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Another developer pushed a lot of awesome changes into DAWN:
I think the changes are very promising.
(They are not included in the current openwrt/master, 21.02.)
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fwiw, are you using the grey DSL socket on your HH5A?
If answer is No, you need to disable dsl_control to stop the random reboots.
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hi bill, thanks for the reply
yes I am using the grey DSL socket. It's in France, tbh it's been a disappointment, I was getting 98mb with the orange router and this one has gone down to 82mb so I might revert to the old router 
fwiw, if your ISP supports vectoring, try different Lantiq firmwares?
The firmware supplied for free by Lantiq, and distributed with LEDE/OpenWrt is over 4 years old and does not support vectoring as far as I'm aware.
I think there is another much longer thread on same subject, but I don't have a link for it.
Regarding the random reboots, have you tried a different power adapter?
Good luck.
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...and remember to enable software-flowoffloading for WAN speeds exceeding ~55 MBit/s on lantiq vr9 devices.
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well it came from the UK so I've got a uk to eu adaptor which isn't ideal but it wasn't doing this with rc3
it's a VDSL line and I checked that software flow offloading is enabled and so is the hardware one....
Actually I'm getting sick of the Frogs now so I might just go live in another country 
Cudy WR1300 just upgraded fine from RC3, no issues. Thanks guys!
Ok. Good job.
I don't know the policy about moving devices to mainstream. Maybe the dev team waits for more return of users' experience.
Does anyone have an estimate of when a stable version of 21.02 will be released?
Thanks for the new release, my zbtlink_zbt-we1326 updated without issue.
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WRT3200ACM user. RC4 does not work! Cannot access router after RC4 install.
Latest snapshots work fine.
Package list : base-files block-mount busybox collectd collectd-mod-cpu collectd-mod-interface collectd-mod-memory collectd-mod-ping collectd-mod-rrdtool collectd-mod-sensors collectd-mod-thermal collectd-mod-uptime collectd-mod-wireless darkstat dnsmasq-full dropbear firewall fstools ip6tables iptables ipset iwinfo kmod-btmrvl kmod-crypto-authenc kmod-cryptodev kmod-gpio-button-hotplug kmod-ipt-offload kmod-mwifiex-sdio kmod-mwlwifi kmod-usb-storage-uas kmod-usb3 libopenssl-devcrypto lm-sensors logd luci luci-app-advanced-reboot luci-app-openvpn luci-app-samba4 samba4-server luci-app-statistics luci-app-sqm luci-app-uhttpd luci-mod-dashboard luci-ssl luci-theme-material mtd mwlwifi-firmware-88w8964 netifd ntfs-3g-utils ntfs-3g odhcp6c odhcpd-ipv6only openssl-util openvpn-openssl opkg ppp ppp-mod-pppoe procps-ng-uptime sqm-scripts swconfig uboot-envtools uci uclient-fetch wpad-wolfssl -wpad-basic-wolfssl -dnsmasq -libc -libgcc luci-proto-wireguard luci-app-wireguard kmod-wireguard wireguard-tools vpn-policy-routing luci-app-vpn-policy-routing qrencode irqbalance
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Same here. May be worth posting your package list just in case.
The latest 21.02-SNAPSHOT works great for me on my wrt3200acm, but I never keep old configuration and the router gets rebuilt from scratch on first boot using a script in /etc/uci-defaults. Maybe there was a config change and it is not config-compatible with rc3?
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Just tried fourth release candidate for a TP-Link RE450-V3, and everything runs pretty well, is allot more stable than stock firmware from TP-Link, want to thank developing team for this.
RC4 is working great for me on WRT32X (virtually the same hardware as yours), 4 day uptime.
Link to my setup from above:
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True to that! I have also noticed that the wrt3200acm temperature dropped from 60..70C to 50..60C range compared to 19.07.
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