At higher TCs there is also the good possibility that even when you don't miss a contact, so much "game time" will have elapsed in the split second of real time that it takes to drop out of TC and react that an armed enemy contact will not only have spotted you but will be in full attack mode.
Especially dicey later in the war when Allied radar may give them your position when they are still out of your contact range... by the time they are close enough for you to see them they may already be making full speed right at you with their claws out.