I'm heavily into dashcams over on DashcamTalk and I've been following trends over there for years.
I ditched Nextbase when they released the series 2 a few years ago as I could see design flaws. User problems posted over there have backed up my initial thoughts. The most complained about is the 522 locking up.
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After a lot of research I opted for a Viofo A119 V3 and it's lived up to it's reviews. Unlike Nextbase it secures to the windscreen without a ball joint and stalk and only the lens moves. I can mount/unmount it one handed and don't have to realign it each time like my old NB.
It's full QuadHD and I was running it at 2560x1440 @ 60fps but after a lot of testing I'm now running it at 2560x1080 30fps, letterbox mode to reduce sky, and the freeze frame is almost pin sharp. 128Gb card.
I captured a freeze frame at the weekend where the closing speed was about 100mph and the other cars numberplate is very sharp.
This a 60mph road but I was only doing 45mph as I was loaded for the tip (cropped) :
This is a straight cropped 60mph freeze frame :
If anyone wants a full 3 minute MP4 file to assess let me know