Hi, I’ve been running some stress testing on an AVM based network. Most people think that the transaction fee on the AVM is fixed - but it isn’t. There’s a very elegant mechanism for transaction fees to increase significantly as the local node starts to experience congestion. I haven’t been able to find out much about exactly how it is triggered but I have witnessed it in action using the “spambot” that Urtho created.
There’s some info here: