I have a program that prints progress message in dots like this into one of the tabs of konsole: ........20112MB....................20209MB....................20307MB.............. This is printed all in one line and fills the sceen, maybe over 10k of characters in total. I noticed that konsole switches to this tab much more slowly compared to other ("normal") tabs. I also didn't notice konsole to pop up in the top by CPU usage. konsole-4.10.5 Since there is nothing fundamentally wrong with printing one large dot-progress line, konsole should be slowed down by it. Reproducible: Always
It hangs up to the point that music playing on this computer gets interrupted. Now I suspect this maybe the fault of NVidia graphics driver on FreeBSD. But not sure about this.
Feel free to reopen if you can still reproduce this with a recent konsole version.