On 1.0.34.0, when I start PR it changes the system "Wave" volume from 100% to 35% if I have the "Effects" volume in PR config set to 100%, or to 9% if I have the "Effects" volume in PR config set to 25% (the value I typically use).
Also, when I exit the game it isn't reset back to what it was prior to starting PR, so requires resetting manually.
Also, when I exit the game it isn't reset back to what it was prior to starting PR, so requires resetting manually.