You probably used Standard fusing … use Advanced fusing , it produces beautiful results .
My coin was fused at 0.2 in Advanced mode and meshed at 4.3 and the results are perfect , if I fused it at standard 0.05 and meshed at 7 I would get a disk full of sand and no details .
You see pointcloud cage is the most important base for you scan … too high meshing can actually induce artificial noises and erase the details .
Don’t worry if you fuse the scan at 0.2 in Advanced mode you will not lose accuracy … this actually have nothing to do with accuracy … so less is more
Try it and you will see the benefit .
If you scanned a cube that really have only 8 points , why you would need to mesh it at milion points ? If it really needs just 8 to be 100% accurate …
Remember resolution is not accuracy , object that is fused at 0.05 or 0.2 still have the same accuracy … and if you really need the noises then fuse at 0.08 using Advanced mode , this will allow the algorithms to remove all the trash data what usually is around 2 millions of points that are really not usable for anything , just clones … a perfect scan is between 250K to 1.600K depends of size and features .
Don’t pull the settings to the max … as maximum settings don’t means maximum accuracy … each scanned object needs different approach , a scanned coffee mug can be 20K and be perfect accurate with the original … all depends of the objects features .
On top the preview shader is not helping to evaluate the whole structure , so pay attention to your fusing settings , and do not go too high if the objects don’t have as much features on the surface … less is more .