He changes the volume to be normal later on. I have some other recommendation though, and that is to be watchful of varying speech. Right now there is something like a core formula that goes "[slight future plan exposition]" followed by an enthusiastic "So!" as if things are really about to start now, but then the spirit gets immediately cut of by a derailing "ähhhhmm" which introduces another segment of plan exposition. Rinse and repeat. This happens around three times per minute, sometimes more often, sometimes less. Though it is not technically a bad model alone, the mass of it, and over 40 episodes of that can get quite bothersome. I know this is a start-up let's play project and some clemency from viewers is mandatory, so see this as well-intended criticism.