Resuming and seeking poorly muxed videos shouldn’t trigger pathological cache seeks

Fixes #736

src/player/PlayerComponent.cpp

@@ -119,9 +119,13 @@ bool PlayerComponent::componentInitialize()
 
   // User-visible application name used by some audio APIs (at least PulseAudio).
   mpv::qt::set_property(m_mpv, "audio-client-name", QCoreApplication::applicationName());
+
   // User-visible stream title used by some audio APIs (at least PulseAudio and wasapi).
   mpv::qt::set_property(m_mpv, "title", QCoreApplication::applicationName());
 
+  // See: https://github.com/plexinc/plex-media-player/issues/736
+  mpv::qt::set_property(m_mpv, "cache-seek-min", 5000);
+
   mpv::qt::set_property(m_mpv, "tls-verify", "yes");
 
 #if !defined(Q_OS_WIN) && !defined(Q_OS_MAC)