That said, we can already see that the main thread hang is caused by the debugger. I know the debugger folks did a lot of performance improvements lately and they’re probably not in v58, some are in Nightly but maybe not all of them yet. Do you think you could try your workload on a recent nightly version too ?
Last thing: by chance, do you have a public-facing website where the issue happens that we could try ? Or a github repo that we could build and run to reproduce the issue ?
Thanks again for your help !