Same issue.
I get these bandwidth warnings all the time despite having a solid 300 Mbps internet connection. They always say ‘reconnected’ within 5 seconds.
I just really, really wish they’d make these pop ups less intrusive. It shouldn’t be locking flight controls requiring you to click a button or disabling online scenery like this; it’s so frustrating, especially if it happens on final and you end up crashing. Just make it a little notification with no interaction.