1. run the code
2. click New Book button
3. copy A1:J300 from 1000r10c.xlsx
4. paste to keikai, into a blank sheet
5. scroll down over 100 rows
keikai obviously renders cells slower than normal cases.
render cells faster or like normal scrolling
1. if you load a file with lots of row and column then scroll down, keikai doesn't render so slowly.
2. please check chrome profile file