End of titan fight game freeze

On the end of fighting titan, game freeze and I was unable to do anything but restart the game. At this point titan flag has gone and there was no trace of me attacking titan.
I have recorded few second after game freeze, but not allowed format to upload, so my recording can be find under link below.

https://1drv.ms/v/s!Av_jqKhT8QrvwVuKJuGj1OCL9RvQ

Please solve this problem as it happen second time to me. This time it happen this morning on 07/08/2018 UK time.

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