Orchestral library external ssd setup x 2

Upgraded my 2 tb external ssd to 4tb for all librarys - Opus and NI Komplete Ultimate. Now it feels slower too load projects with orchestral instruments from the 4tb. Is there a benefit to use both ssd’s and divide the librarys on both does the load go faster or does the computer load one by one as when you copy files from one HD to another HD?
Thankful for tips on speeding up big orchastral libray work/projects. (M3, 32ram, 1tb internal)
Thanx!