Great longevity as they tend to be for club / dj environments but I find they have way too much pressure on the ear to be comfortable as regular headphones for use at a computer.
Performance problems like this are usually complex dumb things. Like calculating a thing a million times when it only needs to be done once, doing one thing and context switching instead of batching, dumb locking that leaves threads spending most of their time waiting, creating and destroying a thing millions of times when it should be reused, etc etc.
It will just be lots of these things that need to be found and corrected.
Plumbing solder is overwhelmingly lead-free and has been for years. Even if leaded solder was used, the vapors from soldering are flux residues, not lead.
Yeh but it is still closed source, no?
I guess if it is air gapped that could be fine, but we are talking mid level network gear here, so for 99% of its use, it isn't air gapped. It is enabling broader connectivity.
So you would have to trust the closed source software at some point.