Bug with MPC-HC single instance

When already running and switching through media files fast the player will add to playlist (what the /add switch does) instead of normal behaviour of replacing the old playlist
The command line is the path\player exe "%1" with no switches (normal start from explorer)

MPC-HC (Nightly, 64-bit)
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Build information:
   Version:            1.9.19.28 (f04438c5f)
   Compiler:           MSVC v19.29.30140
   Build date:         Feb 22 2022

LAV Filters:
   LAV Splitter:       0.76.0.9
   LAV Video:          0.76.0.9
   LAV Audio:          0.76.0.9
   FFmpeg compiler:    MinGW-w64 GCC 10.2.0

Operating system:
   Name:               Windows 7 (Service Pack 1)
   Version:            6.1.7601 (64-bit)

This behavior is intentional and will not be fixed. It is needed to handle opening a selection of files in Explorer, in which case multiple instances get created in quick succession as well.

Wait 2 seconds between opening files and it will work normally.