OS = Operating system.
Anything in Reliability History or Event Viewer?
Having lots of available system resources (e.g., 32 GB memory) does not mean that they are all being properly managed by the OS and installed apps.
How old is that Sharkoon PSU? Original to build, new, refurbished, used? History of heavy use for gaming, video editing, even bit mining?
Could be at some threshold state, with respect to Chrome, where PSU simply cannot keep up with whatever Chrome is demanding.
Resources demanind "X" watts. Chrome then moves it all to threshold value = "X + 1" watts and loading problems begin.
6 drives correct? Try disabling them or disconnecting the non-OS drives one at a time. Determing if the page loading issues continue.
Basically just reducing the system's power demands as a matter of elimination.
= = = =
Before doing that though, try the following:
Use Resource Monitor and Task Manager (use both tools but only one at a time) to determine what occurs when page loading slows and/or stops.
What system resources are being used, to what extent (%), and what is using any given resource. With and without Chrome, with and with out lots of pages loading.
Set up a window to watch, launch Chrome, let it stablize, open one page. Wait until stable, open the next page and keep watching.
Continue the process until Chrome stops. Check the resources.
Task Manager can be used in much the same manner.