Attempt implementing seek while frozen, doesn't work too well like this...Don't use opengl stuff at all if the opengl module isn't set available.

Source/PS_Source/StretchSource.h

@@ -130,7 +130,7 @@ private:
 	double m_seekpos = 0.0;
 	
 	bool m_freezing = false;
-	
+	bool m_do_freeze_seek = false;
 	int m_pause_state = 0;
 	Range<double> m_playrange{ 0.0,1.0 };
 	int64_t m_rand_count = 0;