How to: client-side
when uploading files,

* when uploading from very fast storage (NVMe SSD) with chrome/firefox, enable `[wasm]` in the `[⚙️] settings` tab to more effectively use all CPU-cores for hashing
  * don't do this on Safari (runs faster without)
  * don't do this on older browsers; likely to provoke browser-bugs (browser eats all RAM and crashes)
  * can be made default-enabled serverside with `--nosubtle 137` (chrome v137+) or `--nosubtle 2` (chrome+firefox)

* chrome is recommended (unfortunately), at least compared to firefox:
  * up to 90% faster when hashing, especially on SSDs
  * up to 40% faster when uploading over extremely fast internets
  * but [u2c.py](https://github.com/9001/copyparty/blob/hovudstraum/bin/u2c.py) can be 40% faster than chrome again

* if you're cpu-bottlenecked, or the browser is maxing a cpu core:
  * up to 30% faster uploads if you hide the upload status list by switching away from the `[🚀]` up2k ui-tab (or closing it)
    * optionally you can switch to the lightweight potato ui by clicking the `[🥔]`
    * switching to another browser-tab also works, the favicon will update every 10 seconds in that case
  * unlikely to be a problem, but can happen when uploading many small files, or your internet is too fast, or PC too slow