My laptop starts lagging cca 2h into session if I play 12+ tables. The specifications of my computer are: 2.3-GHz Intel Core i5-6200U processor, a 256GB SSD and 8GB of RAM.

Do you think buying more RAM would help with this and/or is this possibly a problem with the poker site that I play on(WPN)? Bellow is the link to the computer I own if you want to know more about it:

https://www.notebookcheck.net/Acer-Aspire-F15-F5-573G-53V1-Notebook-Review.167946.0.html