The prestige upgrades seem completely broken; the cost reduction didn't appear to do anything when I bought it, the +10% CPS lowered the CPS multiplier on the prestige tab from x151 to x51 and the click upgrade, while increasing click multiplier to 1.10, also inexplicably lowered the CPS multiplier by 10.
The upgrades also seem way overcosted even when exploiting Resource Compression to reduce all generator costs to 1, though maybe they wouldn't be if they increased your multiplier as intended. Even so, you'll have all achievements long before you're able to buy the bottom prestige upgrades (which go up to over 100 points in cost per upgrade when 50 points total is the final achievement), so they don't seem to fit the intended gameplay progression at all.