Whenever I start mirc, I connect to about 8 servers all through znc. First, it's slow to connect to all the servers. It connects 1 at a time instead of in parallel and that already causes a lot of lag. Then it's slow pasting the playback text into each channel window. The more playback there is, the longer it takes. This definitely has to do with something about mirc because I can use kvirc to do the exact same thing and all servers connect fast, playback is pasted into the channel windows fast, etc. In mirc the process from start to finish can take over a minute. In kvirc it takes about <10 seconds. It seems like this is a design problem in mirc, not a settings problem.