Yes. This site has been slow to load pages regardless. But with a browser, you get feedback. With the PWA, on iOS, at least, you get almost no indication that the request has been made and the PWA is waiting for the response from the server.
So, I end up clicking multiple times, probably making the server even more overloaded.
I’m hoping Invision devs are spending a lot of time using the PWA to test and develop v5 and the PWA will be more reactive.
That is, I’m hoping the PWA is a high priority for v5, instead of an afterthought as it is in v4.