lagging

prevaljo

Member Joined: Oct 01, 2017 22:19 Messages: 105 Offline

Apr 28, 2020 15:59

Quote prevaljo's title can run okay on a different computer. See the attached.

It runs but if you look closely you can see the slight stutter in your clip. Which is all I was pointing out. The produced video doesn't have the stutter/lag issue so it's not a major issue but something you may notice and not understand as you put together a project.

tomasc

Senior Contributor Joined: Aug 25, 2011 12:33 Messages: 6464 Offline

Apr 28, 2020 16:05

Yes the stutter is there because of the screen recorder taking up resources. It is not there at the beginning of the recording. Using no hardware acceleration.

optodata

Senior Contributor Location: California, USA Joined: Sep 16, 2011 16:04 Messages: 8630 Offline

Apr 28, 2020 16:58

Quote Yes the stutter is there because of the screen recorder taking up resources. It is not there at the beginning of the recording. Using no hardware acceleration.

What was the preview quality set to? I can slow PD to a crawl with the border on and using Ultra HD preview resolution, even though no resources get close to maxxing out. I also get this message right before the 5 second mark:


Filename	Clipboard02.png	Download
Description	full scale screenshot
Filesize	81 Kbytes
Downloaded:	2 time(s)

tomasc

Senior Contributor Joined: Aug 25, 2011 12:33 Messages: 6464 Offline

Apr 28, 2020 22:15

Quote What was the preview quality set to? I can slow PD to a crawl with the border on and using Ultra HD preview resolution, even though no resources get close to maxxing out. I also get this message right before the 5 second mark:

The preview quality is set to high on my pc. Attached is a screenshot showing the task manager and resource manager to show the last 60 sec. It was taken a few seconds after the skateboard video finished at 26 sec. I do remember the cpu utilization shot up to about 80% but do not see it in the resource manager.

Also uploaded a full video of the pc monitor with my handheld cell phone. It is posted on YouTube here: https://youtu.be/j_mUGQZrbWk to bypass the screen recording. Check the title display at 11 sec. and at 20 sec. Before the fade transition occurs. It looks like an acceptable title here when the screen resolution is set to high.

Edit: Supplied the missing screenshot. No hardware acceleration enabled in Preferences. No hardware acceleration enabled in the screen recorder used earlier too.


Filename	prevaljo title.jpg	Download
Description	Task Manager and Resource manager screenshot after video finished.
Filesize	459 Kbytes
Downloaded:	3 time(s)

This message was edited 2 times. Last update was at Apr 28. 2020 22:28

optodata

Senior Contributor Location: California, USA Joined: Sep 16, 2011 16:04 Messages: 8630 Offline

Apr 28, 2020 23:48

tomasc, that's really smooth and nothing like what I or prevaljo see. You're running Win7, right? Or is that on your Win10 PC? The Death by Titles problem only showed up on my Win10 PC and I'm wondering if this might be a similar issue.

This message was edited 1 time. Last update was at Apr 29. 2020 00:49

optodata

Senior Contributor Location: California, USA Joined: Sep 16, 2011 16:04 Messages: 8630 Offline

Apr 29, 2020 01:05

I've made this quick video with an external recorder showing how bad the lagging is:

The first run is with the border disabled and everything runs smoothly. Peak CPU and GPU loads are in the low 40% range.

When the title border is enabled, the preview staggers and even halts, but the max CPU and GPU loads are only around 30%. I have no idea what's causing the sluggishness and I'm hoping CL can replicate the issue on one of their test systems. I have reported the issue on CS002149576

This message was edited 1 time. Last update was at Apr 29. 2020 01:14

tomasc

Senior Contributor Joined: Aug 25, 2011 12:33 Messages: 6464 Offline

Apr 29, 2020 01:05

Yes that is my win 7 pc. I have tried to move on to the newer win 10 pc but continuously have problems with it that don’t exist in my win 7 machine. The majority of my editing have been 1060/60p material. The AMD graphics card is only about 25% faster in hardware encoding h.264 so I don’t use it at all and prefer cpu and smart rendering which is sharper.

The win 10 pc has the latest intel 9th generation i7, added a 6 GB Nvidia card. Renders hevc video fast with hardware encoding but constantly sees hangs on the timeline like what you mention in the past. Consequently editing and producing 1080/60p video takes about the same amount of time on either pc. I had planned to install win 10 in the old pc in January but keep holding off because of the problems seen in my win 10 machine. Also the PD12 and earlier versions on the pc are not win 10 compatible so I won’t be able to answer posts from those users when and after I upgrade to win 10.

JL_JL

Senior Contributor Location: Arizona, USA Joined: Oct 01, 2006 20:01 Messages: 6091 Offline

Apr 29, 2020 09:01

Quote I've made this quick video with an external recorder showing how bad the lagging is:

Keep in mind, I believe you are 2 display resolutions higher than tomasc phone capture, that's a big difference:
Ultra HD
Full HD (optodata lag video)
HD
High (tomasc phone capture video)
Normal
Low

Your Ultra HD showed how bad the lagging can really be, plain unusable. What does Ultra HD even mean when I thought prior you mentioned just dual, 1920x1080 displays? Why would it even be a option? I'd like to see the system the development team used to show fluent timeline playback of high-quality source during their Ultra HD deployment and QA testing.

Jeff

optodata

Senior Contributor Location: California, USA Joined: Sep 16, 2011 16:04 Messages: 8630 Offline

Apr 29, 2020 14:22

Quote Keep in mind, I believe you are 2 display resolutions higher than tomasc phone capture, that's a big difference:
Ultra HD
Full HD (optodata lag video)
HD
High (tomasc phone capture video)
Normal
Low

Your Ultra HD showed how bad the lagging can really be, plain unusable. What does Ultra HD even mean when I thought prior you mentioned just dual, 1920x1080 displays? Why would it even be a option? I'd like to see the system the development team used to show fluent timeline playback of high-quality source during their Ultra HD deployment and QA testing.

Jeff

All good points.

There's no benefit in using Ultra HD on my dual HD displays, I was simply running the test to see how much more significant the slowdown was and to try and guage the impact on system resources. The answers are "so slow it's unusable" and "somewhat lower" which seem to be at odds with each other.

This message was edited 1 time. Last update was at Apr 29. 2020 14:23

JL_JL

Senior Contributor Location: Arizona, USA Joined: Oct 01, 2006 20:01 Messages: 6091 Offline

Apr 29, 2020 16:53

Quote There's no benefit in using Ultra HD on my dual HD displays, I was simply running the test to see how much more significant the slowdown was and to try and guage the impact on system resources. The answers are "so slow it's unusable" and "somewhat lower" which seem to be at odds with each other.

optodata, maybe a misunderstanding, my thought was why does PD even display those options to users when they have their display set to something lower. Not why did you try them. PD knows your display resolution. When one has 1080p display setting with current PD session, seems like Ultra HD should be greyed out for informative end user feedback.

Ultra HD, 3840p
Full HD 1080p (optodata lag video)
HD, 720p
High, 360p (tomasc phone capture video)
Normal, 320p
Low, 180p

Would be interesting to see how tomasc WIN7 platform handles Full HD preview for fluent playback, I'd guess it would struggle too as it is a fair more complex.

Jeff

optodata

Senior Contributor Location: California, USA Joined: Sep 16, 2011 16:04 Messages: 8630 Offline

Apr 29, 2020 18:14

Quote optodata, maybe a misunderstanding, my thought was why does PD even display those options to users when they have their display set to something lower. Not why did you try them. PD knows your display resolution. When one has 1080p display setting with current PD session, seems like Ultra HD should be greyed out for informative end user feedback.

I understand what you mean and it definitely would make more sense if the option was greyed out.

Now I'm wondering if some of the additional performance hit was caused by PD upscaling & processing at UHD only to also have to downscale to fit that on an HD monitor. Still, where's that processing happening that it doesn't show up as higher CPU or GPU percentages?

YouTube/optodata

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tomasc

Senior Contributor Joined: Aug 25, 2011 12:33 Messages: 6464 Offline

Apr 30, 2020 00:54

Quote Would be interesting to see how tomasc WIN7 platform handles Full HD preview for fluent playback, I'd guess it would struggle too as it is a fair more complex.

Not at the win 7 pc tonight but did try out prevaljo’s title on my win 10 pc and do notice some difference. The win 7 resource monitor shows that only 4 cores were used, and the other 4 were parked during the test last night - prevaljo title.jpg. Windows 10 resource manager does not show individual cores or threads at all. At Full HD preview quality, the audio plays just fine. The video does not stutter, it hangs before the first transition and then speeds up to catch up and this hangs and speeds up to catch up happens again before the second transition. It plays just fine when the preview quality is set to high, just like in my win 7 pc.

Enabling the Prefs/Hardware acceleration/ hardware decoding makes no difference at all in both the Intel or the Nvidia gpu. No shadow files are ever used. It looks like that the gpu's are of no help.

optodata

Senior Contributor Location: California, USA Joined: Sep 16, 2011 16:04 Messages: 8630 Offline

May 02, 2020 13:53