I recently purchased a D800 G2 off eBay, so I haven't the foggiest of this phone's history. When I got it, the stock firmware was pretty broken (Play Store not working, UID errors, ETC), so naturally I didn't hesitate to root and load TWRP via AutoRec (and subsequently updated to the latest unofficial TWRP). Unfortunately, once I flashed the latest snapshot build of CM13 (official), things took a turn for the weird. WiFi and cellular data will shut off sporadically--even at moments, leaving me internetless for 5-10 minutes--and this applies to all other snapshot builds of CM13. It will not turn back on manually; only time and patience can do that. Only on CM12.1 official or unofficial builds would internet hold.
I was wondering how I should approach this. My plan was to flash a KK tot and update the last LP firmware OTA; root with either OneClick or KingRoot; install recovery via AutoRec and bump update to unofficial TWRP 220.127.116.11; and finish with the latest official snapshot of CM13. I just wanted to make sure I'm going about this the right way or if CM13 isn't a good fit for the D800 variant of the G2. Any help is appreciated!