I have a kid that we've tested twice. The first time his processing speed was 9th%ile, the second time a couple years later it was 13th%ile. For him in real life we can see that it is an issue. He is a slow writer and has and LD in written expression so he uses a laptop/chromebook/iPad at school for most writing assignments. OT wasn't recommended in our case and I don't think it is motor skill related so we haven't pursued it (but then again I'm not an expert).
If you aren't seeing issues in real life I don't know that I'd be super concerned. Given that his first WISC scores didn't pick it up that would also be a good sign.
We used our DS's scores to apply for a gifted program and he was accepted without a problem but obviously different programs are looking for different things. In our case it wouldn't be a good fit if they actually wanted high processing. If that is a concern then it might be worth asking. I'm also kind of surprised they didn't calculate a GAI since I'm guessing it would be higher than his FSIQ.
