What about servers not running infiSTAR?
It doesn't seem to explicitly be a problem with infiSTAR given that I don't have that installed and bullet-cam doesn't work for me. Are there any infiSTAR files included in the server mod files that I'm not aware of regardless of whether you own & run infiSTAR ?
Is it something dumb client-side like players not doing something or enabling something? My understanding is that all that is needed is one of the four supported rifles, the appropriate ammo & a scope.