load 4.5 4.1 4.7
rietx gui, NAC example, the real route:
  /api/result/window?max_points=4000 first byte 20.5-21.3 ms, transfer 0.2-0.2 ms
  /api/result/window?max_points=200000 first byte 59.3-60.3 ms, transfer 0.5-0.6 ms
the GUI's _send serving the bytes from memory, so transfer alone:
  nac_A_4000.json (0.91 MB)          first byte 0.4-0.6 ms, transfer 0.2-0.2 ms
  nac_A_full.json (3.41 MB)          first byte 0.5-0.6 ms, transfer 0.6-0.7 ms
  nac_B_f64.bin (1.93 MB)            first byte 0.5-0.5 ms, transfer 0.3-0.3 ms
  nac_B_f32.bin (1.01 MB)            first byte 0.4-0.5 ms, transfer 0.2-0.2 ms
  cmp_nac_A_4000.json (2.96 MB)      first byte 0.5-0.5 ms, transfer 0.5-0.5 ms
  cmp_nac_A_full.json (8.77 MB)      first byte 0.4-0.5 ms, transfer 1.3-1.4 ms
  cmp_nac_B_f64.bin (1.06 MB)        first byte 0.4-0.5 ms, transfer 0.2-0.2 ms
