Presets:

jQuery size: KB
WiFi:
RTT (ping): ms (excluding WiFi latency)
Throughput: KB/s
Packet loss: %

Notes:
- WiFi adds 9ms latency, caps throughput to 3500KB/s and adds 0.1% to the packet loss (1 in 1000 packets).
- Packet loss only makes sense up to 10%.
- Loading times over 1s are very bad.