Increase scan speed

I have a Dell desktop Windows 10 and it has 4 WD External hard drives usb3.0. When I start KODI it scans videos and music (I have large libraries) in no time at all. (a few minutes)
I have a second system in another room that is wired ethernet to my Linksys AC2600 router and my internet connection average is 90 mbps. My hard drives are shared out so that KODI on my second setup has access.
The second system takes 15 minutes or longer to scan my libraries……….is there any way to speed this up?
Have I missed a setting or something else?

Thank you!