Help with new pc rig low fps

I'm at a loss. Just got a Dell g15 5530 with a 4050, which i know isn't an absolute power house. However, all I play is call of duty and at minimum graphics settings I am getting an average of around 40fps with occasional jumps to the low 70s. I have tried contacting dell and Activision and haven't had any success. Is there anything i can try to fix it? It occurs on the laptop display and my monitor. I feel like it should be able to run COD on low graphics no problem since I bought it about 3 months ago.