Huge performance difference with two nearly identical SGF files

[FelixBrendel]

Sabaki seems to perform a lot worse, when the SGF file contains many separate games in contrast to the same amount of variations of an empty board. Here is a zip containing two nearly identical "large" files. After opening large1.sgf, placing stones doesn't have any delay, with large2.sgf placing stones has a 1 second delay (at least on my machine).

I don't know if this is a bug or maybe can be designed better (or maybe the design doesn't allow this).

[yishn]

Interesting... Running a CPU profile yields that the perpetrator is Sprint, a jQuery-like DOM manipulator. I think this is because of the sheer amount of HTML elements that are generated for each game inside the SGF collection.

[yishn]

This fixes the delay when placing stones. I'm keeping this issue open for the delay when opening the 'Manage Games...' dialog. Maybe we can try generating the SVG preview images on the fly (while scrolling)?