Waterfall Improvements

[jefedeestado]

I'd like to see a couple improvements made on the waterfall.

It seems that the waterfall runs much faster and smoother in CW mode compared to the other modes, with FT8 being the slowest. If there is a way to get the same speed and smoothness as the CW mode in all the modes, that would be great.

When the view is set to 6 or 10khz wide, the passband is all the way to the right of the display. If that could be shifted to be centered, that would look much better.