Cathal
Thank you for your comment and link. We have added special code allows to measure time for each line and here is some results:
1) Simple "Try Catch" does not make code slowly. Exactly the same as without.
2) 2 blocks of "Try Catch" one inside other make code slowly for 8-10% :(
We sure that #2 is not good style of development. We will try to make code fully without of "Try Catch" and will replace them with correct conditions.
Again thank you for your comment. We will post additional info as soon will have it.
Sergey