Thumbnail loading speed and quality? Bug or i dont something wrong?

[omdawe]

I just switched from TC 9.51 to TC 11.51 and if switch from detail files view to thumbnail view the loading speed of the thumbnails has been massively reduced from old TC but not only that but also the quality of the thumbnails is also much lower.

Here is a video of my test on : https://youtu.be/Uy3OkR5vlyY

[petermad]

2omdawe
In TC 10.00 a new option "Loading Thumbnails" -> "Internal thumbnails from images" was introduced - have you enabled that after you updated to TC 11.51 ? - It will load thumbnails from EXIF data and be much faster.

Also since TC 10.00 you can zoom thumbnails:

25.10.20 Added: Zoom thumbnails with Ctrl+Mouse wheel between 10% and 200% of the configured thumbnail size (32/64)

Thumbnails might get more blurry when you increase the zoom factor.

Here are my thumbnail settings in wincmd.ini - you could try them and see if they improves your speed:

Code: Select all

[Configuration]
ThumbsLocation=F:\Thumbs
ThumbsCopyDel=1
ThumbOptions=15
ThumbGdiplusTypes=*.jpg *.dng *.crw *.arw *.cr2 *.cr3 *.nef *.orf *.pef *.raf *.rw2 *.jpeg
ThumbPlgTypes=*.* |*.jpg *.png *.avi *.mp3 *.mp4 *.wmv *.mov *.mpeg *mpg *.m4v
ThumbExplTypes=*.jpg *.png *.avi *.mp3 *.mp4 *.wmv *.mov *.mpeg *.mpg *.m4v | *.htm* *.lnk
ThumbIrfXnTypes=*.*
ThumbTxtTypes=*.txt *.ini *.mnu *.inc *.lng *.htm*
ThumbsCustomFieldsEnabled=1
ThumbsCustomField=[=tc.writedate.D-M-y]  [=tc.size.bkMG]\n[=shelldetails.Dimensioner]
ThumbWidthNoCache=128
ThumbHeightNoCache=72
ThumbIconSize=32
PreloadThumbnails=2
ThumbnailPrealloc=100000
ThumbnailMemoryLimit=200
ThumbnailSizeLimit=1000
ThumbsInDlg=1

[AllResolutions]
ThumbScaleFactor=100
ThumbScaleFactor_dpi=96

[ghisler(Author)]

Please also check whether there is a line starting with
DebugIconThread=
in your wincmd.ini. If there is, remove it, because it would cause a big slow down.

Edit:
Please give some more feedback, otherwise I will have to move this thread to "will not be changed".

[omdawe]

Ok so its a fresh install of TC and its no DebugIconThread= in the .ini file.

For the first answer. OMG really, I just want something to work i don't want to add 40 lines of code for something to work like it should, i hate migrating from one version to another adding this many lines of things.

And yeah thanks for informing me about the new zoom function. I know someone that wrote about this on forum about this 15 years ago. https://www.ghisler.ch/board/viewtopic.php?p=472373#p472373

Actually the zoom goes to 200% its the same i had it on my last install of TC, so how its now its only useful if i want to go smaller that never happens but i got clients sitting behind me all the time and they want it bigger.

[ghisler(Author)]

If I set the zoom level to 100%, switching to thumbnails looks exactly the same in TC 9.51 and 11.51 in a folder with photos. Only in branch view there is a noticeable delay, but in both versions. So far I don't know what's wrong on your computer, sorry.

[ghisler(Author)]

After doing some code review, I found out how you can get the behaviour of TC 9.51: In wincmd.ini, add the line
PreloadThumbnails=0
below the header [Configuration] and restart Total Commander.

This way TC starts showing thumbnails immediately because it doesn't queue the thumbnails for all files in the directory (which can take a long time if there are thousands of files). The downside is that thumbnails then only get submitted to the queue when they are scrolled into view. A compromise would be
PreloadThumbnails=3
which preloads just the visible thumbnails plus the next two invisible lines.

[omdawe]

OOO YEAH!!
This did the trick..
PreloadThumbnails=0
Loads nice and smooth, like it did before, thanks mate!
Still wish the thumbnails was as crisp quality as they where before.
And i could zoom to larger images.

[ghisler(Author)]

You can disable the option "Internal thumbnails from images": This uses the thumbnails stored by the camera/phone to the image. The thumbnail quality depends on the camera model.

For zooming, I recommend using a larger thumbnail size and then zooming to 50% by default (100% max) instead of a smaller thumbnail size zooming to 200%.

[ghisler(Author)]

Moderator message from: ghisler(Author) » 2025-06-18, 10:06 UTC

Moved to will not be changed

[omdawe]

Yeah of course i should have thought about that making the thumbnails larger in the settings. And i turned off internal thumbnails and that fixed the ugly thumbnails also.

Thanks