Steps to Reproduce

1. load the file with maxVisibleRows="550" maxVisibleColumns="40"
2. page down to over row 200

Current Result

chrome 89 gets stuck for 1~2 second
firefox 86 shows browser slow down warning

Expected Result

chrome doesn't get stuck
firefox doesn't show warning

Debug Information

• there are lots of inline style because of merged cells, so removing rules takes a long time
  t12266-2.xlsx