Node red web page not loading or slow loading

[TotallyInformation]

@ftonello

but was definitely the amount of libraries in the /home/pi/.node-red/lib/ folder

I get that, but swap use is directly related to how much the device has to load into memory. So if all of the library is being loaded it may take you over the limited memory capacity of the Pi and start to swap. Once that happens, you can kiss goodby to performance on a Pi due to the slow "disk" interface.