v497 Update has been completed.

v497 Update has been completed.
You can now download the update in Steam Client.

Update Details :
1. Fixed issue where difficulties can't be selected in Open Match if used Sort by Difficulty feature in FreeStyle Mode.
2. Fixed issue where frame drops dramatically while playing in Open Match
3. Fixed issue where some tracks were played abnormally in Open Match.
4. Fixed issue where other players' rates did not show properly.
5. Fixed issue where Difficulty setting automatically changed to NORMAL after gameplay.
6. Fixed issue where some BPM unit were not shown in Sort Feature.