Over the last 6 months, I've observed a very annoying trend with united.com when booking multiple itineraries. Let's say I'm trying to book 3 separate flights -- A, B, and C.

Flight A -- website response is snappy and I can roll through the whole booking process as expected.
Flight B -- website starts to bog down with ~5 second delays moving from screen to screen during seat selection and checkout process.
Flight C -- website becomes unusuable with 30+ second delays moving between screens.

The only way to fix it is to log out of united.com, close browser completely, and log back in.

My primary browser is Chrome on Win11 (fully updated). I haven't tried Edge, but I have to expect it is similar behavior. This is all via a US-based IP address with no VPN in play.

Anyone else notice similar behavior and have you figured out how to mitigate it?