Snapshot backup fail for plugin folder

On one of my sites Snapshot process is failing when trying to back up the plugin folder. I get "Internal Server Error".
I see the followign error in the server error log:
[Mon Jul 30 13:16:35.112979 2018] [fcgid:warn] .... mod_fcgid: read data timeout in 305 seconds, referer: https://www.domain.nl/wp-admin/admin.php?page=snapshot_pro_snapshots&snapshot-action=new&snapshot-noonce-field=7b1...

Is there a way to solve this without increasing FcgidIOTimeout limit?