The most common way to combat effects of cable capacitance (and other issues) and improve signal quality is to use null pixel.
That means you have to make sure you add all those null pixels to your sequence.
The better solution I think would be to create a small buffer/line driver board which could be used instead of null pixel. The good thing about it is that it will work with any pixel protocol, will be transparent to the sequence, and will work with any voltage.
If we do GB, the price of such driver would be ~$1.50 or less.