FEATURE REQUEST: extended parameters

[gadolf66]

Hi.
Thanks for sharing.
It would be very useful to add input parameters for the following settings (image below)

One important feature for testers like me that monitor bufferbloat, is that fast.com is flexible enough to gauge the load test, either by changing test duration, as well as parallel connections. See https://forum.openwrt.org/t/cake-w-adaptive-bandwidth-august-2022-to-march-2024/135379/2106)