Perhaps some of the knowledgeable could explain (not critical so don't bust a gut

)

Since my BB upgraded from 1.1 to 4.4 Mbps every time there has been a clap of lightning the BB has dropped out. (6or 7 instances since mid feb).

This afternoon the same thing was happening until the BB popped back up again but at 2.2 Mbps, since when it has been stable despite the storm lightning strikes crashing around my ears (Flash to Bang 0 secs, donned rubber wear and carried on typing.).
When on 1.1Mbps the service was not affected by lightning.

Can the downgrade have stabilised the system?

The underlying problem;

Click on thumbs.