I'm surprised to hear this. Everyone that I know that has the Typhoon line from AWI loves those units.
Waste is a side-effect of making RODI
water. Typical waste to pure water is around 4:1, so you're going to have the waste. I've heard of 1:1 units, but never used them and honestly question their ability to do that. Personally, I use the waste to fill my fresh water tanks. Others collect it and water their plants with it. Finding a use for it is the best idea, because there's just no way to not have it, unfortunately, when producing RO
About your performance issues, I'm going to venture a guess (the same guess cabezon had probably) that your house's water pressure is too low to run the unit at max capacity. I have the same problem at my place.
units need at least 50-75psi water pressure to operate anywhere near the spec, some require upwards of 80-100psi. There's a simple way to test your water pressure, get a unit like this one
and place it inline before your RODI
unit on the source water supply. This guage will tell you what water pressure you have.
If you find that your water pressure is low (like me, mines around only 30psi) then you can choose to install a booster pump similar to this one
They're not cheap, unfortunately, but buying a different RODI
system will not yield you any better results if your source water pressure is too low and you'll just be back here in the same situation with the new unit as well.