I would disconnect the pipe that joins the carbon filter to the r/o membranes and then see if you get a good jet of water from that. If you don't then you need to replace the sediment and carbon filters. (I would take it outside to try this.)
On several occassions over the years I miscalculated the time between filter changes.
As the problem began after the system was moved, what changed? The new water supply pipe could well have been full of dirt. It may also be a water pipe that has an inline on/off valve that isn't open properly (eg. a washing machine or dishwasher supply pipe). If the water is restricted, having a booster pump isn't going to help much if there is a shortage of water to boost.
So the first things to try are;
1. Is there sufficient water to the r/o unit?
2. If so, is there a good flow of water to the membranes through the sediment and carbon block filters?
If these questions are answered satisfactorily, then the next thing to check is that you have all pipes connected up correctly. Then lastly, what about your r/o cannister if you have one? Is there a restriction with this, ie has it been connected up correctly.
Not living in an area with a high water calcium content, I am unable to comment on the results of membranes blocked with calcium deposits. I have only replaced my membranes once in 7 years, the current ones just over 5 years old. When the first units needed replacing, the problem was an increase is TDS rather that a flow restriction.
Spruce