Why when launching obs, wine and pavucontrol, the sound is interrupted for 1-2 seconds in already running applications?

Question

PulseAudio

In this log, I first start the channel on twitch in chromium, then I start obs and at this moment the sound is interrupted and the video in chrome slows down a little. I also tried to do the same operation with wine, obs and mplayer or vlc. Same story. I understand that this is not critical, but it upsets me. I tried to ask on thematic channels, it did not help.
This is how pulseaudio is built:
[ebuild R ] media-sound/pulseaudio-9.0::gentoo USE="X alsa alsa-plugin asyncns bluetooth caps dbus gdbm glib gtk ipv6 orc qt4 realtime ssl tcpd udev webrtc-aec -doc -equalizer -gnome - jack -libressl -libsamplerate -lirc -native-headset (-neon) -ofono-headset (-oss) (-selinux) -sox (-system-wide) -systemd {-test} -xen -zeroconf" ABI_X86="32 (64) (-x32)" 0 KiB
The configuration is typical, the only thing is that I configured the pulse to work in realtime and made it so that anonymous users could connect to it. Tried without these settings, works the same. It may help that the sound is interrupted when I open pavucontrol, the tab with outputs.
Here is the log https://paste.pound-python.org/show/nZWaiFws1iFc6R...