Steps to reproduce

1. run the zul with the file
2. click the button to clear the content of 200 cells

Current result

take around 1700ms

Expected result

reduce the time

Debug info

• in "output" sheet, all cells contain =INDEX(input!$A$1:$J$200, 1, 1), keikai think its precedent is a big range A1:J200. But actually, only 1 cell change affects the cells in "output" sheet
• In the real case, the sheet contains lots of such cases with long dependent relationships, so every clearing produces lots of unnecessary dependents.
  Check keikai-675-sampler-snapshot.nps
  
• the user's real case takes 7~13s