I've tried to do the Bergusia Forge for two pulse rifle frames. The first frame, Destiny crashed twice while en route to the forge, after getting my sparrow across the gap in Sorjourner's Camp. The third trip to the forge I just walked and was fine. I completed the frame with no issues. For my second pulse rifle frame, I walked to the forge three times, and crashed while trying to start up the forge que. Forth attempt, I swapped away from Outbreak Perfected and I had no issues. Don't remember if I had Outbreak Perfected equipped when I did the other attempts, so sorry on that point. First time visiting Forge content since Season of the Drifter started. I've already done a scan/repair on my game files and everything checks out as no repairs needed. My computer's drivers are also up to date. Thanks on the time and effort.
Make sure none of your fireteam have the Revelry helmets on, this can cause crashes.
Currently, having OP and/or the Revelry hemet/ornament combo equipped are known to cause Bergusia crashes.