My first ever speedrun submission, apologies if i'm doing it wrong. I displayed the realtime timer in post starting from the first frame of player control until the last frame of gameplay.

The In-game timer is displayed via RetroAchievement's OSD. The emulator (Duckstation) was set as close as possible to the specified settings from 08/2021. More details in the video description. I can provide my settings if needed.