Lagspike/fps drops on HP OMEN

[JoshOMGpls]

Hi. Recently bought an used Omen 17-w001nq with an i7 6700hq, 965M 4GB, and i've upgraded the ram to HYPER X 16GB DDR4 cause of the lags and stutters i've had every minute. 
note: this happens to EVERY GAME

I'm driving around, or moving, whatever and from a stable 60-80 fps my games frames drop to like 20-30, then a second later it goes back up. Now i've heard someone had this same issue, and people said that HP shipped thoose laptops with 120W chargers and that the 965M requires 150W+ chargers? Does that really matter? I've taken CPU clock down to 2.5 and now the stutters happen like every 5 mins instead of every 1-2 minutes.. starts to look forreal for me and i'll need a 150+W charger.. whag are your toughts?

[Echo_Lake]

@JoshOMGpls

Thank you for posting on HP Support Community.

Don't worry as I'll be glad to help, I have a few troubleshooting steps we could try to fix the issue:  

Firstly, perform Windows Update and HP Support Assistant: (do not skip any troubleshooting steps if you feel steps are repeating) 

To check for updates now, select the Start button, and then go to Settings  > Update & security  > Windows Update, and select Check for updates.

Install updates from HP Support Assistant: Go to Download HP Support Assistant to install the tool.

1. To open HP Support Assistant, double-click the HP Support Assistant icon .
2. Click My devices in the top menu, and then click Updates in the My PC or My notebook pane.
3. Click Check for updates and messages to scan for new updates.
4. Review the list of updates. Updates with a yellow information icon are recommended. Updates with a blue information icon are optional.
5. Click the update name for a description, version number, and file size.
6. Select the box next to any updates you want to install, and then click Download and install.

And, also run BIOS Update: Follow steps from the link: https://support.hp.com/in-en/document/c00042629

Hope this helps! Keep me posted for further assistance.
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.