I have around 200 sites managed with mainwp, all sitting in the same VPS (including my mainwp dashboard site). If I apply bulk setting to all 200 sites like changing their admin password, will mainwp try to execute the command at the same time and crash my server?
I have never seen something like that. I think it should be fine.
BSM extension allows you to set a delay between submitting requests, so if you set it to like 3-5 seconds, extension will process site by site and make 3-5 seconds in between.