My desktop applications freeze when there's heavy I/O. Of course others might pretend everything is OK simply because they don't understand the issue and think these freezes are normal/acceptable/unavoidable or they don't get them at all.
I do. There's a problem with Linux I/O and graphics. I don't know who's at fault. The problem is there. I always had it, with every PC I ever used. Windows does not have this problem; the GUI is always fluid no matter how heavy I/O load there is.