fix: startTime is from Date obj; use timerMaxValue
fix: startTime is from Date obj; use timerMaxValue

kevinnorris/arcade-mode,freeCodeCamp/arcade-mode,freeCodeCamp/arcade-mode,kevinnorris/arcade-mode,freeCodeCamp/arcade-mode,freeCodeCamp/arcade-mode,kevinnorris/arcade-mode,kevinnorris/arcade-mode