Sluggish performance

[tdudgeon]

The UI is often quite sluggish in updating.
No idea why, but we need to investigate and improve this.
For instance, switching between tabs, or loading info on job results.

[OliverDudgeon]

Usually this due to a request waterfall that should be optimised

[OliverDudgeon]

Seems like the page SSR was particularly slow. So I've disabled it for now. This seems to improve tab switching speed.

[OliverDudgeon]

Alan has improved the API request performance on getting tasks greatly. Issue #1251 makes use of a new parameter to do server-side filtering of this request which should help further.

[OliverDudgeon]

Where else is the UI slow?

[tdudgeon]

Sygnature said that the settings page was slow when there was a large number of projects.