Description of Issue:
I purchased a brand new gaming laptop a month and a half ago which I mainly use to play Modern Warfare. Up until yesterday the machine had been performing perfectly without any issues. Suddenly, while I was in-game, the internet stopped working so I exited the game and re-loaded when the internet returned 10 mins later, since then the game has been unplayable due to horrendous static lagging. The internet has become stable again so I believe the lag is not caused by a poor internet connection. For comparison I tested Red Dead Redemption 2 story mode offline (which also up until that point had no issues whatsoever) and the same performance issues remained. From one moment to the next I can go from 100 FPS to 1 FPS and then back to 100. I did not install any software or perform any updates in the 10 mins. How can there be a loss of performance like this from one moment to the next? No other programs have been running whilst I was running the tests. This unknown change has basically reduced the performance of the machine to that of my 5 year old Thinkpad and is intolerable when trying to game.
Things I've tried:
Restarting the PC
Uninstalling/reinstalling the game
Installing newest Nvidia driver
Performing a windows memory diagnostic
Performing a hard disk error check (both drives)
Reverting to a system restore point from last week
Running several virus scans
Ensuring the internal GPU was not being used
I have noticed that on occasion when the game is running (on the main screen, not in a server) I am using 100% CPU and 88% memory capacity but I am not sure if this was the same before the errors started.
Lenovo Legion Y540-15IRH
1 TB HDD (Game data is on this drive)
256 GB SSD
GeForce GTX 1660 Ti 6GB
Windows 10 Home 64 Bit
I would greatly appreciate any help you can offer before I have to approach the vendor about a replacement under warranty.
Please let me know if you require any further information.