Older house in NC. Water pressure and flow are very low from the kitchen sink and also lavatory faucets. However when you are filling washing machine which is at the other end of the house pressure and flow seem almost normal from both
Kitchen and lavatory faucets. Problem is more related to hot water. Also hot water from bathtub is OK. No shower.

Have you removed the aerators from the spouts and checked and cleaned the screens? Do you flush your heater on a regular maintenance schedule? If not here's how to do it.
For long life and fewer troubles you should keep your heater clear of mineral build-up by flushing on a regular schedule. Let me show you how. Attach a hose to the boiler drain at the bottom of the tank. With the pressure on, open the boiler drain and let it run until the water runs clear. You will see a spurt of red,(rust) followed by white grains,(lime or calcium carbonate). This shouldn't take more then a few minutes. Do this monthly to keep it clear. Now pull each aerator and clean the screens. Be sure you put them back togather the same way you took them out. Don't forget to flush it out every month. Your heater will thank you for it. Good luck, Tom