It's not the quantity of the comments, but the quality of comments that counts. I assume you are using spintax for your commenting? If not, you should. If your spintax isn't long and original, IG will flag you out and temp ban you.
Each of use have their limits. I have seen some post 100 -200 a day. In the past, they have even posted 300.
As for me, I prefer to do it slow and have it last for months without being temp ban. I do between 40-100 a day. Mix it up every other week.