I called in company who work with canadian visa, they say that limit for pasting a visa change from 30 days to 90 (I don`t find this info in official site). they can do visa but every day situetion change! I sure PPR will be after open Poland
Personally I wouldn't pay any or much attention to such statements at this point - yes, the situation changing too quickly to know.
Speculation now: yes, there will certainly be slowdowns. But the thing I am guessing people are missing is that the slowdowns won't be evenly distributed - some things will slow down or stop as people work from home (and some things can't be done from home, physical access to files needed, etc). For offices like Warsaw, some people won't be able to fly in - but some people also won't be able to fly out and will stay in place.
BUT: i am guessing that demand for tourist visas for example will almost completely drop off a cliff in a lot of Europe (although a lot is done online, not all). Some staff / capacity will be reallocated - not right away but some are probably already shared - so some things might (surprisingly) be faster. Some stuff will just come to a halt.
And these "90 days instead of 30" statements? They're just a guess and giving room and warning people like you that some delays may happen. I doubt they have any idea at all how much longer procedures will take. It's good that they're warning people that we should expect delays but at this point, no more than a guess.