Yeah the exclamation marks are on a steps-timer until they return. It was our fast solution for not soft-locking players in the clicker act if they were unlucky and ran out of easy enemies and still needed some.
The DPS calculation in the UI is based on rolling the outcome a few number of times, because I don’t know the math to actually calculate the expected average of this system. Way to complex. So the estimation error is unfortunately quite large in this build. We’ve fixed that already for our next version so that the error is much smaller.