Click on the answer choice taking too much time

Hi,
Thanks for the awesome plugin. Recently I noticed that for large table when the number of question grow the click taking much time.
For example. if i have 40000 questions in a table.

[Mtouchquiz firstq 1 lastq 5] working fine.
[Mtouchquiz firstq 39000 lastq 39005] in this case click on the option taking much time.

Any idea how to fix this.