Week view is slow to load when opened from a day view (web)

On the web app, switching to week view after looking at a specific day takes a long time for the days to load. This is distinct from the write-latency problem tracked in "Web is slow" - making changes is now fast for this reporter, but navigating into week view still stalls. Context that may matter: reported by a very large account - roughly 19,000 entries (19,200 live) and 1,650 repeater instances, on web 1.75.0. Calendar views querying without a bound would show up here first. Expected: week view loads as quickly as the day view it was opened from.