PsykoTenshi
Thank you for detailed description.
memory leak in the video player: 1170 MB
It is high value of memory use at your settings.
From log I see it took 17 minutes from start playing after rewind to used memory grown to 1170 MB:
10:36:19.085; ===== rewind backward 00:05:24 / 00:23:38
10:53:44.726; Error: Warning: there's a memory leak in the video player: 1170 MB
I met used memory growth when used wrong subtitle filter.
1. What filter are you using for subtitles?
2. Show please used memory graph from SVP performance graphs window while error appears again?