While the issue has seemingly been resolved as of November 17, should the problem arise once again,😄 there's a fix that players can use to resolve the issue. Those who want to invite friends must create select😄 the Channels  tab, create a channel, then have people join in.

There might😄 be corrupt files in your installation directory which could be the potential cause for the Logging into Online Services😄  error in Warzone 2. You can scan and check the files on both Steam and Battle by selecting the😄 game, going to the settings, and searching for the scan and fix option. 

Note that in Call of Duty: Black Ops your framerate is capped to a maximum of around💳 85FPS, even if you disable VSync.

In game open console shift +💳 ~ (the key to the left of 1 on the left side of the keyboard) then type in /com_maxfps 125💳 or what ever you want the cap to be.