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Running a bunch of clients isn't going to make it any worse, from what I can tell it was a once-off problem to do with the backend instance being unable to load data. I've removed the mechanism it used to remove the bots, but I'm still not sure (and may never know) why it happened.

I've also just identified a bottleneck/threadlock which will severely limit the ability to upload from multiple clients at once without increasing upload latency to where it will spawn new server instances and cause my quota to be hit again, but I have a fix for that which I'll implement and test tomorrow. The load right now seems pretty healthy though, I see in the logs uploads from you, MN and Wompi, thanks guys. I'll let you know when you can unleash the full power of your machine(s) =).