I might have found something interesting in current planet scattering state.
1/ switch to combat mode
2/ select new point on left panel (eg wreckage)
3/ go to it and head directly to the ground (you should be able to be at 6 to 10 km from the "poi"
4/ you should be able to find everything in tha radius
I did that two times while on my way during exploration then a third when I went back from Colonia. I then, applied this in LHS 3447 and found all bacterias in the system in a quite short time. I was surprised that it was also valid with a scientific settlement I went to for a mission. I'll continue trying this strategy for a while. I'll just use Horizon to find geological. I don't like been taken for fool. Consistency "que Diable !" (untranslatable)
Yes I've found the same, it's been a pretty reliable technique so far