Modal mode very slow with big galleries

I’m submitting a…

[ ] Regression (a behavior that used to work and stopped working in a new release)
[ ] Bug report  
[ ] Feature request
[ ] Documentation issue or request
[x] Support request

Current behavior

When I load a (plain) gallery with over 2000 images, loading the thumbnail is reasonably fast, but then opening the images is very slow (and also when you have loaded an image and press left or right to change image it’s very slow as well). It takes about 3-4 seconds for a 130KB image.

Expected behavior

Moving between images should be faster, or at least proportional to the image size.

Minimal reproduction of the problem with instructions

Just add 2000 images to any gallery.

What is the motivation / use case for changing the behavior?

Would like to have a very big gallery.

Environment (the most important section to fill very carefully)

- @ks89/angular-modal-gallery version: X.X.X
- Node version: X.X.X  
- npm version: X.X.X  
- Operating System and version:  
- Angular version: X.Y.Z 
- angular-cli version (or SystemJS/Webpack): X.Y.Z 
- I'm using Server Side Rendering with angular-universal: YES/NO
- I'm compiling with mode: DEBUG / PROD / PROD with AOT



Browser:
- [ ] Chrome (desktop) version XX
- [ ] Chrome (Android) version XX
- [ ] Chrome (iOS) version XX
- [ ] Firefox version XX
- [ ] Safari (desktop) version XX
- [ ] Safari (iOS) version XX
- [ ] IE version XX
- [ ] Edge version XX

Others:

[giTonyx]

Thanks for the answer. It makes sense, I guess. And thanks for the great support you are providing answering all kind of questions!

[Ks89]

Issue closed. Feel free to open it again if required.