# PortAudio.jl does not work well with Gtk.jl
**URL:** https://discourse.julialang.org/t/portaudio-jl-does-not-work-well-with-gtk-jl/47003
**Category:** General Usage
**Tags:** question
**Created:** [September 21, 2020, 1:02pm UTC](https://discourse.julialang.org/t/portaudio-jl-does-not-work-well-with-gtk-jl/47003 "2020-09-21T13:02:50Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@kogad](https://discourse.julialang.org/u/kogad)
#### Post date: [September 21, 2020, 1:02pm UTC](https://discourse.julialang.org/t/portaudio-jl-does-not-work-well-with-gtk-jl/47003/1 "2020-09-21T13:02:50Z")
Hi, I am trying to develop a gui app for real time audio processing using `PortAudio.jl` and `Gtk.jl`. The following code is for just recording and playing back.
```julia
using PortAudio
# using Gtk
stream = PortAudioStream(1, 2)
println("recording")
sig_in = read(stream, 51200)
println("playing back")
write(stream, sig_in)
```
However, `using Gtk` makes recording and playback take too much longer than it should. Recorded data looks fine, but it’s breaking up when played back.
How do I fix this problem?
---
### Author:  [@sdanisch](https://discourse.julialang.org/u/sdanisch)
#### Post date: [September 21, 2020, 1:21pm UTC](https://discourse.julialang.org/t/portaudio-jl-does-not-work-well-with-gtk-jl/47003/2 "2020-09-21T13:21:51Z")
Make sure you have the most recent version with these changes:
[https://github.com/JuliaGraphics/Gtk.jl/pull/521](https://github.com/JuliaGraphics/Gtk.jl/pull/521)
If that’s still laggy, you may want to take a look at other GUIs…
Makie could work for simple stuff 😉