[UX] The bitrate slider is too slippery to select a desired value

[SwimmingTiger]

I had spent five minutes pressing controller buttons to hit the exact 15 Mbps, but I had no luck. I ended up editing the config file.

Improvement suggestion: If the user presses the button and releases it very quickly (like a mouse click), the slider will only increase by a fixed value (such as 0.1). This will make it easier to adjust the value to our desired value.

[Wontell]

+1 Confirm, please give us an option to enter a number