I have read some histories of Jutland that suggest that at least in part the British battlecruiser losses at Jutland were possibly due to poor powder handling discipline (leaving flash tight doors between turret and magazine open) to increase the firing rate of the turrets. Also have read some sources that claim British cordite propellant was less stable than German propellant.
Possibly.
But compare the British BCs to the German BCs, like the Seydlitz. The Seydlitz was shot to hell at Jutland but sailed back to port under its own power.
The Germans knew how to make ships as close to unsinkable as was ever humanly possible.