Depends on where the image is hosted.

If it's hosted on the instance it can be pretty slow to load depending on instance, if it's hosted on a different site (like imgur) and the link is shared here the image loads almost instantly.

Or at least that's been my experience so far

I'm hoping I can find an alt to imgur for uploading and sharing images though as direct links to the pictures can be less than ideal together from imgur

I varies for me, from instantly to about 10 seconds, I imagine it depends on the hosting site used as someone else pointed out

Yes. But I think it's to do with what instance the pictures are hosted on. Lemmy.world & .ml load very slowly for me, but my local instance loads basically straight away. This holds for me on the other Android apps too (connect, liftoff, thunder...)

Wait I thought that was just my internet being slow or smth. I haven't got anything like 10 seconds, but it has been slow.

Been browsing with Jerboa for 2 hours now, no problem here.

Same for me. Liftoff and Thunder seems to open images instantly. While Jerboa takes a second to load them.