~snip~
Good for you.
I haven't paid €300/stick just to put one aside accepting "this is how it is"... 
I rather try to find an explanation why is one behaving so weird. There's a solution for everything. And yes, this is lottery and has to be fun not a struggle.
Good for you.
I haven't paid €300/stick just to put one aside accepting "this is how it is"... I rather try to find an explanation why is one behaving so weird. There's a solution for everything. And yes, this is lottery and has to be fun not a struggle.You say that 7 of them are working fine and the 8th one doesn't work properly, right?
Also that you're using the USB hub from GekkoScience?
One of the USB ports is designed to connect a fan, so it's power only.
That could be an explanation for your issue.