Try forcing the strongest pressure side of your faucet into the weakest one.
For example open open the bath tub hot and cold faucets then remove the aerator from yuor basin faucet and hold your finger over the faucet opening.
By doing this and opening the HOT and COLD you maybe able to forced out sediment that could be.
blocking these lines.
This happens a lot in older buildings when we have to work on the water mains in high rises.