Lag spike issues with the new update

[Essman_and_Co]

So admittedly I don't play the game on a good pc at all but I usually run it just fine, at about 30-40 fps. Today though, after the update that added all of the new store content, I have been experiencing major lag spikes: dropping down to 5 fps or less. When these drops happen my game is essentially frozen, I cannot see or hear, and if they happen multiple times then my guns go invisible and I cannot aim down sights (I tried respawning and changing characters and it does not fix the guns problem.) If anyone has any questions about the specificities I will answer, of course.

Is this just, like, a problem of the new updates still needing some optimization or is there anything I can do on my end? Please let me know, thank you

[Mystic]

As have I. 

It started the moment people started mass purchasing. I do assume the purchases/ notification system have some sort of affect on server performance as there was a time when about 8 people bought something and the whole server froze for a few seconds and lagged back to about 15 notifications.