Try cooking only one thing at the time. With pressure, the cooker is going to push water deep into what you put into it, yes, but the result is that everything

Try cooking only one thing at the time. With pressure, the cooker is going to push water deep into what you put into it, yes, but the result is that everything mixes and will taste the same especially if you mix vegetables and meat. Generally, vegetables together are "safer" taste-wise.