I noticed the freezes happening but first thought it might be local frame rate drops. But when I asked on Teamspeak if others are experiencing them too it turned out we actually all experienced them synced at exactly the same time. All of us were hanging around close to each other and kept experiencing those "lags" around Chernarus (we made a large tour from the NW Airfield to Stary to Elektro, back up to Berenzino and finally the NE Airfield and those freezes occurred regardless of location).