I don’t know exactly since when, but for some reason it takes significantly longer for the data to load. You noticed something bad because the Open Home Fundation logo is displayed.
Whether in the app or on the PC, it’s the same for both.
I have attached the logs and a video
https://drive.google.com/drive/folders/1bLgAxpTDFCr1Iryis4_s8EOcUYkxAYKk?usp=sharing
I suggest to first check the startup of your integrations to see if it is related to a specfic integration:
Check this page → Link to Repairs – My Home Assistant
And then select the three-dotted menu in the top right and select the Integration startup time item 
(and yes, I agree that function is hard to find 
)
Oh thank you, I didn’t know such a thing existed. I have several that have quite a long start time. Is it normal that ZHA, Homematic Local and the Reolink integration have such a long start time?
Do we actually mean the same thing? It’s not about the start time when Home Assistant restarts, but when the app opens or the website opens. Then it currently takes about 4 seconds until loading data is finished. Otherwise it was always just a second
