Low performance when launching OHIF on https://demo.kheops.online

[spalte]

Launching OHIF form the https://demo.kheops.online instance of KHEOPS is very slow. KHEOPS running on other similar configuration has acceptable speed. For example, this problem does not occur on the similarly configured https://lavim.unige.ch

https://demo.kheops.online is running on the Exoscale SKS managed k8s using an Exoscale managed PostgreSQL database and the Exoscale SOS S3 implementation.

https://lavim.unige.ch is running on the Unige k8s cluster with an unite managed PosgreSQL database and the Unige Hitachi based S3 implementation.

Diagnose, and possibly fix the slow speed.

Steps to reproduce:

1. Connect to https://demo.kheops.online
2. Click on the 'eye' next to the Aneurix study to open it.

Observed behavior:

• OHIF launches but remains on a black screen for a very long time.
• The loading of https://demo.kheops.online/api/link/***/studies/2.16.840.1.113669.632.20.1211.10000744858/series/1.3.6.1.4.1.19291.2.1.2.2413568109772100001/metadata takes a very long time. 75 seconds on my machine.