With 1.095OG, was 2 packs of Wyeast 1318 Liquid enough?
That's indeed a valid question.
1. I presume you did not make a starter with that yeast?
Making a yeast starter a week (or 2) beforehand) is not only recommended, it's almost rule, especially when pitching into high gravity wort.
Ideally you would need 322 billion vital cells for that 5 gallon 1.095 batch.
http://www.brewunited.com/yeast_calculator.php
2 packs that are 3 months old do not have nearly enough vital cells for an optimal fermentation of such caliber.
Typical LHBS liquid yeast age is 3 months old (average), but could be even older, and seldomly younger.
Even if the 2 packs were picked up at WYeast earlier that day, there wouldn't have been enough cells (~200 billion), although, they would have been super, super fresh, and may have had a chance to prove that.
2. Did you aerate or better, oxygenate your wort when pitching the yeast?
That's very important, especially with higher gravity batches.
With high gravity batches, such as yours, a
2nd aeration/oxygenation, 12-18 hours after pitching, but
before active fermentation has started, is encouraged.
Very active fermentation for first week but it seemed to stall at 1.05.
How are you measuring the gravity right now?
Hydrometer or refractometer?