Can you please take the "lets tweak R7800" and "OpenWrt is buggy" discussions to other threads, as none of those issues is directly related to my build.
There are threads for those kind of discussions e.g. these related to R7800
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R7800 Exploration:
Netgear R7800 exploration (IPQ8065, QCA9984) -
R7800 Performance:
R7800 performance