short data dropping when switching between H/H+/DC

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http://forum.xda-developers.com – Hi, Since a while my provider activated DC. When my phone (6603) swithches between H, H+ and DC there seems to be a short loss of data. On the phone itself the problem is not that big. It gets allot worse when using the phone as hotspot (windows 7 on 2 different laptops). The connection to internet gets lost for a few seconds on the pc. mailclients get disconnected, chatclients get disconnected etc etc. I have the latest baseband (.423) and tried following clean installs: -Pac -Carbon -stock .423 The problems remains thesame. My other phone (Galaxy GT-9300) works perfectly as a h (HowTos)