MSgraph, takes up to 48 hours before changes are visible - microsoft-graph-api

Question

We use MSgraph and EWS API for our products.
When we do changes in our test Microsoft 365 environment (Add/change/delete - roomlists and rooms) we see the changes immediately when testing with EWS Editor.
But it takes up to 48 hours before we se the changes by using MSgraph Explorer.
I would guess that this is not expected behavior?
We understand it might take some time (Up to 30 minutes) but up to 48 hours?
Our test environment is a pure Microsoft 365 tenant (No hybrid)
The MSgraph API calls we test is:
GET /places/microsoft.graph.room and GET /places/microsoft.graph.roomlist
It seems that this issue might have been introduced after our environment was moved to the Norwegian datacenter.
No error messages from MSgraph, all seems normal..
Here is the results from MSgraph when i ask for roomlist:
"#odata.context": "https://graph.microsoft.com/v1.0/$metadata#places/microsoft.graph.roomList",
"value": [
{
"id": "32d75744-113e-4bec-91c4-811623d11521",
"displayName": "Test2",
"address": null,
"geoCoordinates": null,
"phone": "",
"emailAddress": "Test2#loop24.no"
},
{
"id": "1d535e8b-c44d-498a-9046-dbbe1ae3be75",
"displayName": "TestList",
"address": null,
"geoCoordinates": null,
"phone": "",
"emailAddress": "testlist#loop24.no"
},
{
"id": "b9ea8bd6-32da-4d6d-b38e-db6c03f4fa54",
"displayName": "RoomList",
"address": null,
"geoCoordinates": null,
"phone": "",
"emailAddress": "roomlist#loop24.no"
Here is the results from EWSEditor (This is correct)
Call Get Roomlist roomlist#loop24.no Roomlist