FTM2012 laggy

Hello all,

Just wondering if anyone else has the following issue. Whenever I upload and keep my tree synced with ancestry.com, FTM 2012 is always a bit laggy - meaning my computer freezes for 1-2 seconds intermittently - whether I'm editing facts, switching between people in my tree, etc. Whenever I desync my tree or Go Offline, the lagging stops. Is this typical for everyone because of syncing going on in the background or am I alone here?

Thanks in advance :)