Being connected through multiple connections at the same time would be a good protection against this, as you'd maintain an acceptable speed even if one of your connections was to go slow or disconnect altogether.
I'm unsure of whether it should be was to go or were to go slow.
It's one of your connections, so that makes me think it should be singular as in was.
However, it's preceded by a pluralized noun, connections, so that makes me wonder if perhaps it should be were. Also, my instincts tell me that were to go sounds better.
Are one of these wrong, or are both correct?