My Nextcloud has always been sluggish — navigating and interacting isn’t snappy/responsive, changing between apps is very slow, loading tasks is horrible, etc. I’m curious what the experience is like for other people. I’d also be curious to know how you have your Nextcloud set up (install method, server hardware, any other relevent special configs, etc.). Mine is essentially just a default install of Nextcloud Snap.
Edit (2024-03-03T09:00Z): I should clarify that I am specifically talking about the web interface and not general file sync capabilites. Specifically, I notice the sluggishness the most when interacting with the calendar, and tasks.
Configuring a Redis cache really helps in my experience.
But I also recently noticed something odd: it works quite well on my usual internet connection, but when I traveled abroad it became excrucingly slow, more so than the admittably worse mobile connection would have let me assume. Something about it seems to require a relatively stable internet connection on the client side it seems.
That might be due to your ISP’s routing and interconnects. They usually have good routes to big services and might lack good connections between home users in different countries or on different continents.