Slow performance in frontend

[hyperman2]

Describe the bug
We have a history of 365 days. When looking at a detail page, it takes ~35s to create the report. Only ~5s are spent waiting on the network, most time is spent waiting on plotly.

Please find atached: A flame graph of firefox performance.

To Reproduce
Steps to reproduce the behavior, e.g.:

1. Go to https://monitor.emodnet.eu/resource/50?lang=en
2. Wait

Context (please complete the following information):
GeoHealthCheck 0.8.6 on docker 24.0.2, client: firefox 117 on Ubuntu 22.04 LTS

Additional context
Add any other context about the problem here.