Water leaks from shower head with diverter off
I have a problem in my master bathroom with the shower/tub enclosure have to high of water pressure. Here is an example: I turn on the hot water to full throttle then turn on the cold water increasing the water flow. Before I can increase the cold water to full flow, the water is coming out of the shower head at slightly more than drip pace. The same happens if I turn the cold water then turn on the hot water. This did not used to be like this. The other water outlets in the house have the correct water pressure(ie the other bathroom shower does not display the same symptoms). Even the sink in the master bathroom is okay. When I do turn the diverter on for the master bathroom the pressure from the shower is so great it blows the shower curtain up. I even switched the diverter from the guest bathroom to the master bathroom but had the same results. What is the issue here? Help please.