i have that same bike. Cyclesense at Tadcaster.Within weeks bottom bracket loose.Took it back ,once again same prob .This time i told Giant in Notts .What was going to happen and had it replaced at their cost .
Bike cost £249.
Use it only for towpath riding .Tried it at Dalby Forest on the easy easy trails with a load of kids .
In my opinion i would not use it on proper trails.