Had this too, at first I thought it was the windows insiders build I was using. Ended up re-installing windows, which fixed the issue but still a hassle.
(Windows 10 btw)
Best event in my opinion. Was a ton of fun when GM's did stuff like this. Hope it makes a return. G1 did it once and scrapped it even though the general consensus, at least by those that I know, absolutely loved it.
I know work is being done to ensure there are no complications between BattleEye and the advanced launcher, but what about editing the files for a static crosshair? Those who have used Dreamss shaders before should know what I am referring too. I still have the files as well if anyone has been looking for them.