I have problems with fluctuation of flow at certain times.

I am on an economy seven system with my power supply.

I find that before the economy seven stops then my spray is at very minimal ,at about half power or later in the day a fully normay spray that reaches easily to to rear of the bath.

If the washing machine is on cycle then spray is down to half or less,

I presume that the problem is that the water flow is the cause but the house has a very strong water pressue.

Would be obliged if some answers to help would be appeciated


Regards