Since one month, every time i use Sage, the system freeze for 30 seconds every 4-5 transactions i do or simply click i do into the system. i got a (sage not responding) at 

the top of the screen. i think it only do that since the last sage update but not sure about this. i try adding more buffre memory in the connection manage but it  doesn't change anything. Except when it freeze, the system is acting fast and normal.

Any idea ??

Thank