Worst thing that could happen is that it would have to download the files it would otherwise have copied form the other installation.
That's how I see it - it's just a hunch, I am not sure!
@BluBear, sorry you had your issues last night.
have you seen this thread?
https://forum.dcs.world/topic/343717-latest-oculus-v63-ptc-build-crashing-dcs-when-used-on-oculus-link/page/2/#comment-5391872
Seems it was the last Oculus update causing grief?
Also this thread
https://forum.dcs.world/topic/344646-oculus-link-and-q3/#comment-5391871