Plutonium

I tried but didn't work

When I first started playing I got 100-120 fps in both multiplayer and zombies. Then the multiplayer fps just dropped to 5-15 but zombies stayed the same. I tried everything in the forum now multiplayer is running at 30-50 fps and zombies 50-70.
Specs:
intel core i5 7200U
NVIDIA GeForce GTX 930MX
8GB RAM
I play on laptop.

Still doesn't work

When I open bo2's multiplayer specifically and join a server or start a game, the fps is around 65-75 but some times 7-12

Im getting a message saying this every time I try to connect to a server: