That may be Sir, but it is actually an issue. Other threads have limits/rules on pictures, but here no limits have been set. Unfortunately, some take advantage of this.
Jpg compression is your friend. If the image is 1080p, you can easily get 200-400kb an image, which I don't think is too insane, unless multiple people drop double digits. I know we went over this before, but I still think that having attachments auto-scale/compress would be best for servers and visitors alike. But then I suppose that might kinda hinder threads that are basically all about the high quality images.
I just use ifranview to run some quick batch compression. Or if I just wanna pick a couple out, I open it, hit the 's' key and save it in a 'web' folder as a mid-quality jpg. It takes the time to open the image right before uploading. Just adding 1% of compression can cut filesize way down on some images. Getting down to ~80% it still looks okay and is much much smaller. Guidelines may just be in order there. Some tips on how to keep the filesize down. Or again, just make that part of the uploading process. Lock them at 1080 or even 720, apply light compression.
I'm spoiled rotten by my phone internet, though... and having a flagship from last year. I see pretty much no pop-in.
Screenshots in spoilers does help, too. They still have to load, but it seems like they always load last and don't effect navigating the rest of the page until they're actually displayed. I can recall having a few laggy days where the page loaded fine and it was only when ticking a spoiler that things actually bogged down with images scanning and the page jumping as each one pops in. So I always figured those were a fair enough compromise. I don't know how it is for other people but for me not tapping spoilers packed with hi-res images made it completely navigable. It'll come down to how much memory you have available, not internet speed.
