Well, ALL good info, and I see you discovered you had to be in the Root of C: to see the swap file: [IMAGE]   It is NOT the Browsers per se., well, Firefox is using more resources. What IS the problem is the CPU USAGE!!! 66%, 2/3rd's, and it probably spikes higher. Here is what my Task Manager Processes is like with 5 apps open: [IMAGE]   Firefox has TWO tabs open, the rest are add-ons and normal stuff it also opens: Just expand the list, and this is what I see: [IMAGE] However, you need to discover WHAT is using the CPU... so on the CPU column header, double click twice and that would put the CPU users in order of most usage at the top: [IMAGE] As you can see, at the time I took the screen capture it was 8% used, but different a few minutes later: [IMAGE]   For instance I left Task Manager sorted to show me the most, and started a real resource hog, MS's Flight Simulator. Probably mirrors what you have is the ability to do anything (other than the game in my case), well close to it: [IMAGE] Still, only 1/2 my 32GB's. If I play longer, it will get to use more RAM depending on the detail of the scenery and what else is moving on the screen. So, your problem is NOT RAM per se, but what is loaded and taking up CPU resources. Sorting the CPU usage should help you discover that, and for some reason, it could be something you know you are doing and continue to need? All I think you've done is prove RAM is not the issue. Do what you want, but I for one, would not think adding RAM will do much but cost you money? Until more is know what is running, and why, I don't know what else to suggest? A rough add of the screen shot you posted for RAM shows about 14GB's of RAM used, close to the 43%. Somewhere else you'd find by sorting the CPU is using a LOT of CPU because your 7 apps are using next to nothing.      
I have an XPS 8940 with 64GB of RAM, i7 processor, 2.90GHZ, 2904MHZ 8 coresI'm considering maxing out the RAM. Do I need the max amount? Probably not - at the moment However I always max out my RAM as a way of future-proofing my devices in order to give them the longest operating life possible and to meet any challenges or usage I might have down the lineI would use Crucial RAM of course but according to Bing ChatGPT there may be performance or stability issues at the max amount and with non-Dell RAM The device is designed to max out at 128GB. However,Has anyone had any issues maxing out the RAM for this device?Thanks.  
XPS 8940, should I max out the RAM?