Wolfram Workbench slow to open notebooks

Has anyone found a way to speed up the launch of .nb files within Wolfram Workbench? On my computer it takes a good 30 seconds at least, which is a lot longer than Mathematica takes to load. I wouldn’t complain except I’ve also been having issues with my project setup in Workbench, and so I’ve found myself starting and restarting it a lot.

Setup details:

Windows 10
Mathematica 12.1.1
Eclipse 2020-09
Wolfram Workbench 10.1.822