Description:
Open document with 21735 rows.

AutoFilter on column with a large number of diffrent data.
Opening filter list all display but input search element first symbol and Libreoffice it began to work slow, not refreshing in the display. After 50-100s all good, input second symbol and again it began to work slow.

If I use standart filter Or Autofilter on column with less diffrent data all work fast. On MS Excel all work fast.



Steps to Reproduce:
1. Open document with ~21735 rows
2. Apply Autofilter on column with diffrent data
3. Open drop-down menu Autofilter and input symbols in search elements
4. After each symbol LibreOffice slow

Actual Results:  
After each symbol LibreOffice slow filter autofilter list

Expected Results:
Work fast and filter after input each filter


Reproducible: Always

User Profile Reset: No

Additional Info:
Intel(R) Pentium(R) CPU G3240 @ 3.10GHz 2 Core
MemTotal:        3945044 kB


User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:50.0) Gecko/20100101 Firefox/50.0