Invisible players

- Make system files check http://help.ea.com/en/article/how-do-i-run-the-system-file-checker/ if errors found - restart PC

- Close/setup/uninstall other applications http://help.ea.com/en/article/programs-that-may-cause-conflicts-with-origin/

- run as Admin https://www.microsoft.com/en-us/Download/confirmation.aspx?id=35

- download and install (before it, uninstall all other old vc++ components) as Admin (if u have x64 OS than install x32 and x64 packages of each):
vc2005 - https://www.microsoft.com/en-us/download/details.aspx?id=26347
vc2008 - https://www.microsoft.com/ru-ru/download/details.aspx?id=26368
vc2010 - https://www.microsoft.com/ru-ru/download/details.aspx?id=26999
vc2012 - https://www.microsoft.com/ru-ru/download/details.aspx?id=30679
vc2013 - https://www.microsoft.com/ru-ru/download/details.aspx?id=40784
vc2015 - https://www.microsoft.com/ru-ru/download/details.aspx?id=52685

- Look for the game file itself (and for Origin.exe too) and right click on the icon/file, then choose Properties.

Click on the Compatibility tab. check the box beside “Run this program as an administrator.”

- Disable Origin in game for BF4 http://help.ea.com/en/article/how-to-use-origin-in-game/

- for testing disable cloud storage http://help.ea.com/en/article/cloud-storage-in-origin/

- delete folder C:\Users\[user name]\Documents\Battlefield 4\

- delete file ...\Origin Games\Battlefield 4\user.cfg

 - If u use chrome than uninstall plugin and dont install again, use plugin-free lunch http://help.ea.com/en/article/my-battlelog-games-wont-launch/

- The in game options!
Upon first boot of the game, it'll look a little like this.
You'll want to hit ESC > Options > Reset each tab to default.
Controls > Reset > Yes
Gameplay > Reset > Yes > Reset Tutorials > Yes
Audio > Reset > Yes
Video > Reset > Yes
Keybindings > Reset > Yes

- Give to us dxdiag log http://help.ea.com/en/article/how-to-gather-dxdiag-information/

@syrian_lanisterr it is a glitch in the game and this will happen most when they get out of a tank or anything you drive.