At the present time, iScreensaver Designer 5.2 provides support for macOS 10.13 High Sierra, but there are some functional limitations.
Please read the 10.13 High Sierra Tech Note
as well as the Release Notes
Due to changes made by Apple, iScreensaver Designer version 5.2 does not currently support macOS 10.14 Mojave.
Please read our forum post
for the latest updates.
[Solved] Question about screensavers and large images
We're working on some screensaver projects where we want to make smooth tours of large images (15k x 15k pixels or larger). At present we're tiling the images and then building a screensaver from the tiles. The results are OK but a bit clunky.
Is there any way to make smoother transitions between full screen image tiles and/or program pan and zoom effects on larger images?