Definitely not a deal breaker, an autistic friend I know is actually a super recognizer, face wise, and is good at this in general.
Personally I suck at both recognizing faces and subtle expressions, but because autistic people tend to be detail oriented it is quite possible.
And I tend to notice expressions, but cannot interpret them well.
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Diagnosed autistic level 2, ODD, anxiety, dyspraxic, essential tremors, depression (Doubted), CAPD, hyper mobility syndrome
Suspected; PTSD (Treated, as my counselor did notice), possible PCOS, PMDD, Learning disabilities (Sure of it, unknown what they are), possibly something wrong with immune system (Sick about as much as I'm not) Possible EDS- hyper mobility type (Will be getting tested, suggested by doctor) dysautonomia