1/64 of an inch seam allowance variation may not seem like much - but on 8 seams that is 16/64 - 1/ 4 inch variation.
If all the units are the same size squares - the finished product might be smaller or larger than expected - but will go together without many problems.
if all your blocks are the same size - and the same block - you can probably " safely" proceed. But if you are using sashings , they would need to be adjusted for length.