iPhone 11 Pro Max crashing

I am using an iPhone 11 Pro Max paired with Apple Watch v3 with Tacx. I mirror the phone to an old Apple TV v2 in the garage.
Lately the zwift app keeps crashing. Most annoying when I’d climbed 550m and put be back at the bottom! (Was so looking forward to the downhill)

All software is up to date. I have closed all apps and turned the phone on and off but I still crash on every ride now

Any suggestions?

Try without mirroring to atv. A few ppl have reported problems recently with atv.

I’ll try that. Thanks for the advice