Hi all. So my late 2013 iMac, 16gb RAM, 1TB HDD is really struggling with FileVault enabled. I mean literally struggling specially with at least 2 or 3 apps running and Safari just kills it. So if I turn off FileVault which will take several days to finish, and just enable Firmware lock, that will prevent anyone from bypassing my login screen to access the iMac right? Even in recovery mode or booting on external drive? I have a Time Machine backup that is encrypted enabled. I can still use that TM hard drive to restore my files on a different Mac or a new Mac right? Also what if the old iMac HDD finally dies and I need to boot on external HD, can I still do that with Firmware lock enabled?