PSE Discrete is not available for a 20 x 10 grid

+ Launched a PSE of 200 operations on a 20x 10 grid.
The PSE Discrete is not available, the error message is that the size is too big.
A 20 x 10 grid isn't that big.

I understand that in the simulator page it could look crowded, however from the operation dashboard it should be possible launch it. I think that there's enough space to accommodate that many operations.

Logs say that not all the operations were completed ...
Logs attached.