Like Yuri said, check the ventilation of the Laptop.
Also, give a look over your laptop's drives and also check to see if you're behind on any sort of updates.
If you're going to defrag any drives the laptop has, make sure they are HDD and not SSD, because you absolutely do not want to defrag an SSD, as that will shorten it's lifespan.
Here's a vid on trimming Windows fat:
https://www.youtube.com/watch?v=jCB1a1hokwg
Lower RAM usage and improve latency:
https://www.youtube.com/watch?v=Hhm56dBvtTQ
How to unlock Windows 10 ultimate performance mode:
https://www.youtube.com/watch?v=jlIC5kGFneA
Fix high RAM usage with Standby list cleaner (Also helps with latency):
https://www.youtube.com/watch?v=zXuOaOkVz8M&t
If you want to see what your drives read/write, you can use this guide, but I would not suggest using this for defragging an SSD:
https://www.youtube.com/watch?v=q-2cQL-Q4IM
Also, as a general tip, bring up your task manager and select the startup tab. Make sure you've only got the basics running at startup (Like Windows defender, but no clients like Steam, as you can start them at any time you want).
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