Unblocking Apps by fixing a Performance Bottleneck

For a while now there was a problem with the Immich app. On the web it did not start most of the time. If it did, it was painfully slow to start and to load images. Curiously, the mobile app did work. I had been meaning to fix that app in particular, but did not get around to it. But a few days ago, a pass over all the apps to upgrade them revealed the actual problem. It was the same problem that plagued other apps and made them slow, for example KitchenOwl. These apps did work, but they were no fun to use. Long waiting times between action and reaction made them just feel sluggish.