Sande

The version seems to be 12.1. I've also tried running this as Admin, different compatibility modes (Win10 with latest patches and nVidia's drivers the actual OS), different View settings (e.g. side bars on/off etc), but so far nothing has helped.

Sorry for the long delay. I agree, it looks a lot like it - but there is a clear difference if I uncheck it and then try (the delay feels worse and the games appear in one big clump, instead of in a rapid succession, as expected.) Front End seems to be using the Default theme, the collection I have installed is Dreams 64, if that makes a difference. I noticed the Box images were fairly large (taking 1.7GB on disk) so I batch converted those first to smaller PNGs, but that didn't help. Then I converted those to really small JPEGs without transparency, but even that didn't help - the performance was pretty much identical to original images. I've also tried with using just a plain black backdrop (with those small jpegs), using desktop wallpaper etc - none of those made a difference. Same with Dynamic Box sizing, I didn't notice any difference. I also made sure debug logs are off (didn't notice any perf impact with those.) One thing that does make difference is lowering the amount (3011) of games - with only 128 games in one of the playlists, the scrolling is almost smooth (still not 100%, but better.) For what it's worth, if I navigate to that folder in Windows, the file explorer can smoothly scroll through all of those images regardless of their size without any hitches.

Ouch, that got my hopes up - but unfortunately no, that was already checked. Just to be thorough I tried unchecking it and then again with it checked, but it seems that wasn't the culprit. There's so many options for customization and features (which is a good thing!), that I'm hoping this would be a case of just some toggle somewhere being wrong, but I haven't found anything yet... EDIT> ...so I assume the behaviour/choppiness you see on the video when scrolling isn't normal, right?

Ahh, yes, I noticed the bar when I change the grid - seems like the cache gets built quickly. Here's a dropbox link to a screencapture. It's scaled down a bit, but should be 60fps to showcase the motion. Thanks again for looking into this.

Thanks for the quick reply. That would make sense, although I have scrolled through the collection and all the covers (I'm guessing the cache gets built automatically in the background or when the image gets displayed?) and the Launchbox has also been open for quite some time - so I'd assume the cache is already in place? I should also mention that the Big Box-side is smooth, no issues there - it's just the windowed Launchbox that is stuttering.

I've tested LaunchBox now with couple different fairly fast PCs and in both cases the UI was sluggish and slow to update when viewing your collection. Just checking whether it's a "feature", i.e. a slow implementation or if I have a wrong setting somewhere...? Is it smooth for anyone else? Scrolling with images on is slow and choppy, scrolling further from the sidebar causes a slight delay after which images pop up again - same happens even in a text mode. It isn't completely unusable, just far slower and choppier than one would expect for this. The media is loaded from a fast NVMe drive (~7000MB/s) so that shouldn't be the issue and everything else is running fast and smooth. There's roughly 3000 games with images in a collection. Currently running this on Win10@Ryzen 9 3950X 16-Core, 32GB / RTX 2080Ti.