Choppy Playback when using Display LUTS

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Edgar Bueltemeyer

  • Posts: 28
  • Joined: Tue Mar 31, 2015 4:32 pm

Choppy Playback when using Display LUTS

PostTue Dec 11, 2018 9:43 am

Hello,

i know this is an old discussion from don't know when....
BUT, i got the same problem in Resolve 12, 14 and now 15.2. It's about playback performance issues with Display LUTs.

I tried all kinds of different configurations and narrowed it down to this:
When i use a LUT on the "3D Video Monitor" it works when Color Viewer AND Scopes use "Use Video Monitor Selection". When i choose "No LUT selected" for Color Viewer and/or Scopes the playback goes down to 11fps even without grades. :|

When i turn on "Hide UI overlays" it works again but also the Viewer AND the Scopes display a different image then. I guess it's the image with the Monitor LUT applied. This is creating a wrong image!
I use the Monitor LUT for the display calibration LUT and want the Color Viewer and especially the Scopes UNTOUCHED!

I had this problem for some time and never really worked through all the settings to actually find out the cause. I have one machine where i need the Display LUT because i use a non hardware calibration screen here... The other machine doesn't have the issue because i use a hardware LUT...
That's why i never really understood whre the problem came from until i tried all combinations...

So again:

Monitor: NO LUT ,Color Viewer/Scopes:Use Video Monitor Selection = OK
Monitor: LUT ,Color Viewer/Scopes:Use Video Monitor Selection = OK
Monitor: NO LUT ,Color Viewer/Scopes:NO LUT = BAD
Monitor: LUT ,Color Viewer/Scopes:NO LUT = BAD
Monitor: LUT ,Color Viewer/Scopes:NO LUT, Hide UI Overlays = OK, but wrong Color Viewer/Scopes


So it is mainly dependend on "Use Video Monitor Selection"... or the fact that whenever you use a DIFFERENT LUT setting on Monitor and ColorViewer/Scopes the playback framerate drops.

Could you please try to replicate this?
Thank You!
--
Machine 1:
Resolve 15.1.2 - BM Intensity Pro 4K - Tangent Wave
Win. 10
HP Z620 - Dual 8 core
NVIDIA QUADRO K2000+GTX 1060

Machine 2:
Resolve 15.1.2 - BM Ultrastudio SDI USB3
Win. 10
ATI Radeon R9 390
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waltervolpatto

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  • Joined: Thu Feb 07, 2013 5:07 pm
  • Location: Burbank, CA

Re: Choppy Playback when using Display LUTS

PostTue Dec 11, 2018 2:11 pm

Monitor: NO LUT ,Color Viewer/Scopes:NO LUT = BAD


So, if you have no lut at all it is bad?
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Edgar Bueltemeyer

  • Posts: 28
  • Joined: Tue Mar 31, 2015 4:32 pm

Re: Choppy Playback when using Display LUTS

PostTue Dec 11, 2018 2:14 pm

Yes...
In any case if it is not "Use Video Monitor Selection" it is bad... :?
--
Machine 1:
Resolve 15.1.2 - BM Intensity Pro 4K - Tangent Wave
Win. 10
HP Z620 - Dual 8 core
NVIDIA QUADRO K2000+GTX 1060

Machine 2:
Resolve 15.1.2 - BM Ultrastudio SDI USB3
Win. 10
ATI Radeon R9 390
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Edgar Bueltemeyer

  • Posts: 28
  • Joined: Tue Mar 31, 2015 4:32 pm

Re: Choppy Playback when using Display LUTS

PostMon Jan 21, 2019 1:56 pm

Bump!

Can Someone try this?
Anyone?

Bye!
--
Machine 1:
Resolve 15.1.2 - BM Intensity Pro 4K - Tangent Wave
Win. 10
HP Z620 - Dual 8 core
NVIDIA QUADRO K2000+GTX 1060

Machine 2:
Resolve 15.1.2 - BM Ultrastudio SDI USB3
Win. 10
ATI Radeon R9 390
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Dermot Shane

  • Posts: 1551
  • Joined: Tue Nov 11, 2014 6:48 pm
  • Location: Vancouver, Canada

Re: Choppy Playback when using Display LUTS

PostMon Jan 21, 2019 4:30 pm

no issues on five machines, one near identical to your z620 (mine has dual10c's) two z820's, a z800 and a z420 with a k2200, so very close to marginal for playback already...

on all machines selecting any combination of luts makes no diffrence to playback
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Edgar Bueltemeyer

  • Posts: 28
  • Joined: Tue Mar 31, 2015 4:32 pm

Re: Choppy Playback when using Display LUTS

PostThu Feb 07, 2019 10:46 am

Hi Dermot,

thank you very much for trying this.
I did another test with the updated Version 15.2.1 and now it seems to work here too....
Strange thing.

Regards!
--
Machine 1:
Resolve 15.1.2 - BM Intensity Pro 4K - Tangent Wave
Win. 10
HP Z620 - Dual 8 core
NVIDIA QUADRO K2000+GTX 1060

Machine 2:
Resolve 15.1.2 - BM Ultrastudio SDI USB3
Win. 10
ATI Radeon R9 390

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