I really tried, but it's painfully slow. Reached 239 currency on the first reset tier, took away too much time to reach that, did 3 resets total, was only able to get the first prestige upgrade. The multiplier dont really grow that much and you lose an amount in proportion to what you use to get prestige upgrades. No automation makes it even more painfull, automation for buying upgrades should be the first ever upgrade you get.