Expand diretory on 'Open File or Project' loading too long

Hi, 

I'am using IDEA community 2021.3, the Linux version. 

When I click File -> Open as in the screenshot,  and expand the  /data directory takes more than 90 seconds.

There are more than 1000 network disk under /data, but command 'ls /data' response very fast. Is there a way to make the expanding faster? I have already set 'directory.access.checker.enabled' to false.