Doing a search I found people on Reddit had this issue back in 2019, but couldn't find a fix, so here I am.
For the past couple of days, I hear no gunfire, footsteps, etc. What I do hear is ISAC, enemies talking and others talking i.e Kelso. Leading up to this loss of sound effects, the com sound was multiple rooms behind on missions. I'm on Xbox Series X. I've restarted my game several times, hard reset and unplugged my xbox. I've also checked my settings to see if I turned something off, but I can't find anything. This is completely gamebreaking and incredibly annoying, so if there's a fix for this, please provide a link or explanation how to fix.