Tldr; it's 50-65% xp reduction
Changing from 4 tick to 5 tick is a 25% reduction exp across the board for you and crewmates
95 to 34 is a 65% reduction in exp for you during sorting. It's hard to say exactly how much of the time is sorting vs salvaging but let's just estimate 40% of the time since it's slightly less that half the time salvaging, and during this time you get the highest exp rates so let's estimate about 70% of the xp during this time. This comes out to 18%.(25+18=43%)
Then if you include the 60% reduction to crystal extractor which was like 1/3 of the exp. That's an additional 20%.
So your nerf should read 50-65% xp nerf to salvaging or maybe just write something like "sit" because it's really just comical.
Salvaging is the primary reason sailing is a good skill so.... why you do dis?