Dips in the chart at the same time. Nothing important or is it a problem? Personally, I tried the source versions from jtoomim and from Sawa. Connecting the server to Internet through NAT or without it. Bitcoin ABC version 0.16.1, 0.16.2 and 0.16.3 But! On these nodes, there are no such dips on the graphs. http://siberia.mine.nu:9338/static/classic/graphs.html?Hour http://p2p-spb.xyz:9338/static/classic/graphs.html?Hour What is the reason? The difference in the hardware? I'm so sorry my english isn't good. Thanks!