Would be curious about this in more detail since I’ve not normally seen a JS app be significantly slower due to adding autoinstrumentation over the years. There’s obviously an overhead but aside from the occasional bug I’ve never seen it be significant to impact user experiences or cost to serve.

That said if your goal is basic performance metrics and nothing more, then tracing is overkill. Don’t even need an SDK, just monitor the compute nodes async with some basic system metrics. But if your goal is to narrow down behaviors within your app on a per-request basis there really is no way around tracing if you value your sanity.