Sigh. https://developer.mozilla.org/en-US/docs/Web/HTTP/Link_prefetching_FAQ
The functionality is *literally* called prefetching. Perhaps educate yourself before shooting off.
And yes, your second point is true. Prefetching or preloading (which is what it is in this case) will cost resources. That does not mean it is impossible as implied.
We should be discussing the real tradeoffs that are possible instead of assuming that the current implementation is all that's possible. I bet there are a bunch of people that could live with half the DSP budget if it meant instant preset switching for instance. (I'm not saying that this will be how those parameters pan out, only Line 6 can determine that)
