Bulk profiles updating {adding BIO Link} Best Delay

i want to talk about this issue since 100 accounts even with different proxy per every account when you are adding bio link the same domain to all of them you may lose them all

we need to set a delay between every update
in your opinion what is the ideal delay in seconds betweeen every acc update that not raise the spam flag

Thank you so much
Note: i used URL shortener to all my links and all my links redirecting to youtube videos