New pack and latest update ruining the game

abyjo2003​  The drag issue was fixed with the day 0 patch released alongside EBN.  The pregnancy issues are on EA's radar and should be fixed sooner or later, hopefully sooner.  It's possible that mods that include pregnancy-related features won't be viable either until that point, since modders probably don't want to spend time reconfiguring their creations only for EA to change the underlying code yet again.  So you'll just need to wait for that process to play out.

For the performance issues, please describe them in more detail.  I don't know whether I can help with that, but I can certainly try.  If you're interested, please also provide a dxdiag.  Click Windows key-R, enter dxdiag in the run box, wait for the scan to finish, click "Save all information," and save the file to your desktop.  From there, you can attach it to a reply using the paper clip (Attachment) icon included with the other formatting buttons.