SVP and New Encoders

I'd like to use the PIC to handle the quadrature decoding and counts but I'm a little bit concerned about whether the counting rate will be too high for the PIC to handle, particularly for the highly geared versions (100:1, 122:1). Although the trade off between RPM and gearing probably puts all those motors in a similar range. Have you had any experience using these motors and encoders with the SVP?
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