Program freezing in contest mode.

[SP9HOL]

Hi, I have problem with Log4OM 2.27.1.0 when using contest mode.
The program is freezing when I try to input call sign. All window is freezing on few seconds. I think it is worse when is more QSO in log - but more this is like 50 :/, so this makes it impossible to use contest mode.
Normal mode works ok. Is it some way to recognize what causes it?

[G4POP]

Not happening here, please engage 'Trace' mode in help menu, replicate the issue then send a support request to lele (AT) pisto.it