@bigbells The chip(s) are only as good as the mods they're installed in. A bit of solder work, a fat daddy vapes 510, and a good case, battery sled, and some beefy electrical wire should fix your dna device.
I did have the pleasure of rebuilding a dna based mod once for a friend (DNA30 I believe) as the company used some craptastic thin electrical wire to do the work, so I went to the boards, looked at specifications, found the MIN and MAX wire diameter to use to get a solid connection to / from the sled, buttons, and 510, desoldered, resoldered with new wire, new sled, etc, and the problems he was having, vanished.
I did have the pleasure of rebuilding a dna based mod once for a friend (DNA30 I believe) as the company used some craptastic thin electrical wire to do the work, so I went to the boards, looked at specifications, found the MIN and MAX wire diameter to use to get a solid connection to / from the sled, buttons, and 510, desoldered, resoldered with new wire, new sled, etc, and the problems he was having, vanished.