More information needed:
Desktop and laptop hardware specs and OS information.
Router: make and model?
How are the -dBm's being measured? How are the upload and download speeds being measured?
Use Resource Monitor and Task Manager (use both but only one at a time) to examine the overall performance of the desktop and laptop.
Not necessarily a comparison between the two devices but just to look for something that the desktop is doing (or not doing) with respect to what the laptop is doing or not doing.
Hey, here is some more information:
Both devices are running windows 10 with build 19042.1288
The laptop has a Intel Dual Band wireless-AC 7265 card
The desktop has a netgear A6210 usb adapter.
Router is one that came with my internet package. Optus Ultra wifi.
The -dBm's were measured with wifi analyzer an app from the windows store, and down/up speeds were measured with the Ookla speed test.
On task manager and resource manager I couldnt notice anything out of the ordinary on both devices, Just like 5-10 apps that are using sub 50 B/sec network utilization.