Hey @flamemonarc, welcome to Discussions!
I'm sorry to hear you're running into these issues. You mentioned this mainly happens in MIA missions, and before you get disconnected you lose the ability to reload? Does this happen on any particular maps, or when playing any particular operators?
Since you're receiving connectivity errors, I also recommend running through these steps just to confirm things are working correctly with your connection.
@flamemonarc
No worries. Please keep us updated on this.