If you want to stick with the car analogy, perhaps the story would go that that your mechanic has told you your brakes are shot, and you've got 200,000 miles on an engine that normally blows a head gasket at 120.
Sadly, you're probably not able to do anything about it, but the problem DOES boil down to the fact that you're pushing those machines harder than they can handle. And, yes, 2012 probably did add more overhead that pushed them over the edge.
All that said, if there is something going on with Worksharing, you might try to turn off the Worksharing Update Frequency.
Big Purple R ... Options ... crank Worksharing Update Frequency all the way to the left.
Frankly, I'd be surprised if it helped - the fastest it updates is every 5 seconds, but you never know.
Good luck.