We have only ever received 2 crystals when the combo was over 100.
Yes that sounds correct.
will earn Crystals for:
- Winning an Immortal Battle (2 Crystals)
- 50-99 ATK Combo (1 Crystals) , 100+ ATK Combo (1 Crystals)
- 50-99 Assist Combo (1 Crystals) , 100+ Assist Combo (1 Crystals)
Therefore it does not matter if you have over 200 combo you will ONLY receive 2 Crystals in all.
Also this is not the place to post about this kind of matter.
This is an FAQ thread.