That's a really poor idea. If you're concerned about guessing attacks on your RNG seed, the right response is to increase the size of your seed -- NOT to slow d

That's a really poor idea. If you're concerned about guessing attacks on your RNG seed, the right response is to increase the size of your seed -- NOT to slow down the function. To put it another way, adding one bit to the seed length is equivalent to doubling the cost of the attack. In other words, a 1000x slowdown in the generator is the same as about 10 bits of additional seed material. Not worth it!