If you are sure, that it is because of the number of AddonPackages (you might try to store away stuff in several steps to ensure this) and it is nothing else wrong with your installation like a faulty file (doubt this, mine is slow on startup with all those packages, too) then there is only a little you can do. Are you maybe still on a Harddisk? Going from HDD to SSD was a huge performance step for me, some time ago. Except of this, you could try to unpack all the Var files to folders with the same name. This would save some little time for unpacking during startup, but I would only suggest this, If you are exactly knowing what you are doing. If you want to keep all that stuff, you maybe want to do like I do, and get yourself a hot or cold beverage while VaM starts up...