Determining possible cause for TCP reset

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After additional investigation my original question may not may not indicate a true problem

I decided to grab a tcpdump from my router and it shows my router sending an ACK back to the game server and then 11 to 14 seconds later my router sends and "Encrypted Alert" and then the connection breaks down with a RST

It looks like this

14.786405   my-router game-server   443 TCP 63  1160    4029    63132   37271 → 443 [ACK] Seq=1160 Ack=4029 Win=63132 Len=0
25.736395   my-router   game-server 443 TLSv1.2 63  1160    4029    63132   Encrypted Alert
25.736538   my-router   37271   game-server 443 TCP 63  1191    4029    63132   37271 → 443 [FIN, ACK] Seq=1191 Ack=4029 Win=63132 Len=0
25.794935   game-server 443 my-router   37271   TLSv1.2 235 4029    1192    32430   Encrypted Alert
25.795012   game-server 443 my-router   37271   TCP 235 4060    1192    32430   443 → 37271 [FIN, ACK] Seq=4060 ...