Pinned Play Head (centered auto scrolling) FPS/refresh rate/stuttering/laggy

Audacity Help Forum Windows
1

I am using pinned play head out of necessity, because the automatic scrolling is too tight and doesn’t show any “padding” of the previous “page” as the audio progresses and I constantly need to select small sections where pops/clicks and other mistakes appeared in the voice recording.

The refresh rate / FPS / frames per second at which the waveform is move on is jarringly slo w. 12-24 FPS perhaps?

Is there a way to override this to be 60fps?

Audacity 3.1.3 / Win10 / ff6d67 of Wed Dec 22 16:35:36 2021 +0100

2

I checked by recording at 60fps, and the refresh frequency seems to actually be 30 FPS, perhaps a little higher even. (sorry for new post, couldn’t find edit button, probably antispam measure)

3

Sounds like a job for a second CPU (or GPU)
but Audacity only uses one core (even if you have more) … https://forum.audacityteam.org/t/multicore-64-bit-version/42651/3

4

Here is a graph of one cor during playback with pauses inbetween on my i7-10700k:
krGroPS.png
It doesn’t seem to be the cause.

(how does one get img bbcode permissions?)

5

See here for how to put images in forum posts: https://forum.audacityteam.org/t/how-to-attach-files-to-forum-posts/24026/1
(I’ve done that to your previous post for you).

6

In my case scrolling more than doubles Audacity’s CPU usage …

scrolling maxes-out one of my two cores (50%).gif

7

Same:
ping.png
If you enable logical processors view in task manager, you will be able to see each core’s utilization. In my case, the Audacity-bearing core is at about 25% while pinned is enabled (~10% while it’s off)
cpu.png

8

Fwiw: There currently is a massive rework of the rendering code happening: https://github.com/audacity/audacity/pull/2635

It currently is 4x faster than it used to be, the goal is to make it 40x. So hopefully this won’t be an issue anymore for 3.2

9

Cool, thanks for sharing!

10

Is that platform specific? I’m not seeing any noticeable speed increase on Linux.