about 5 years ago - FatsharkJulia - Direct link

Our anti-cheat client (Easy Anti-Cheat) automatically blocks most RGB controllers due to their use of old, exploitable drivers.

I’ve reached out to Easy Anti-Cheat in the past to request that various RGB controllers are whitelisted but unfortunately they were unable to honour my request due to the reasons above.

I can only recommend that you disable the software prior to launching Vermintide 2.