Steps to Reproduce

1. load a blank xlsx
2. open developer tool > Network tab
3. input 1 at A1, press enter
4. repeat the previous step for 9 more times, input A1:A10

Current Result

observe each zkau response time
each time around 200 ms

Comparing to keikai 5.12.2 with the same steps
each zkau takes 5 ms

Expected Result

since it's a blank sheet, it should take a small time to process the request

Debug Info

• 6.2.0.FL.20250811-Eval also has this problem