How to get stable FPS with my config [Lenovo Legion Y520-15IKBN]

Config:

Lenovo Legion Y520 Laptop

Nvidia GeForce GTX 1050 Ti

Intel i7-7700HQ CPU @ 2.8GHz

16GB RAM

Since around the beginning of February I've been getting fps drops from a normal 60 to under 10 fps. It happens randomly but it is really emphasized in fights which makes it impossible to aim and the very game unplayable. I've tried many fixes [and yes I've read EA's crash guide with a lot of points which I've tried and none worked because those are crash related (along with tons of other threads)...] including: 

• Tinkering with in-game settings
• Setting my Nvidia GPU as the one the game uses in Nvidia's Control Panel along with some other tinkering in there
• Clicking optimize in GeForce Experience
• All of the bullets in the links on EA's crash guide from EA_Blueberry in his comment here (https://answers.ea.com/t5/Technical-Issues/Apex-Legends-Fps-Drops/td-p/7516141)

Also, I've noticed that my GPU usage drops from around 80-90% down to below 10% while the fps drops are happening.

Everything is on Low settings.

Other games like Rainbow Six Siege, Star Wars: Battlefront II and League of Legends work perfectly fine.

So far I've found absolutely no fixes whatsoever online that even barely helped me...

Any advice would be appreciated.