I suspect there is something wrong with your Triple A calculator. I would like to run France myself on Triple A but you have not provided the attack force composition (I know, on purpose).
A normal attack on France is normally 99% (All available ground units)
You mentioned tacs, so I threw in the 1 from Poland.
7 INF, 4 MECH, 3 ART, 6 ARM, and 1 TAC vs. FRANCE = 99%
with the Germans losing an average of 7.3 units.
After seeing many G1’s, I can attest that 7-8 infantry lost is the average, in fact.
My Triple A calculator is (and always has) working perfectly. Something is wrong with yours, or you’re doing something wrong. I would suggest re-downloading Triple A, or contact Veqryn and tell him you’re having problems.