If the map takes long to load, is it the fault of OSM?

Asking this, because the map is taking awfully long to load. All the building data with the names and such loads, but the ground itself doesn’t load.
Is there any way to check on the status of the servers?
There’s also a company name and a link to their site in the bottom left corner, is that the host? And if so, is there any way to check on the status of the host’s servers? The site itself is geoportal.gov.pl

It’s not an OSM issue. You should report it on their website.