I'm a daily user as well, and the performance really irks me, especially their mobile app. One of the most important things for an app like this is easy input for later triage. I almost always end up swearing whenever I try to input something in their mobile app.
Perf is our #1 priority right now. We've had a big team tackle the fundamentals for the last two years, and we're rolling things out in the coming months. I'm personally leading the team that's rebuilding our API on top of this new infrastructure. We're still early in that process, early signs are that we can get perf down to around 100ms. The mobile apps are built on top of the API, so this would make them fast too.
