Most stable firmware for Nighthawk R6700v3

I recently updated my R6700v3 to 1.0.4.126 and it's been nothing but a mess. The router will just stop working every day and I'll have to hard restart it. I also cant access the web or mobile interface to change anything except for a few minutes after a reset. 

This wouldn't be my first firmware fiasco with this router too. I updated the firmware after I bought it and it bricked the router, and it had to be reset completely. Then another one lowered my download speeds about 75%. What the hell is up with Netgears garbage firmware writing? I've never had a router with this many problems, especially not one I've spent $100 **bleep**ing dollars on.

Are there any stable firmware versions I can try out?  I think I had some luck on 1.0.2.16 because that's the most recent version I have in my downloads folder, but that's a pretty old firmware. Must be the reason netgear only offers 90 days of technical support for their products, they know it'll **bleep** the bed after a few months and they don't want it to be their problem.

Any suggestions would be super appreciated! I'd really love to just get this router working.