OK, I am going to backpedal some of my comments. I was thinking daily trips home. My mistake; sorry for that.

24/7 immersion might hit diminishing returns. All work and no play, etc. Go home once in a while. Sometimes, but not necessarily every time, maybe invite the sim partner, or the whole gang, for a meal or a barbeque and talk about stuff other than airplanes. Next day, dive back in refreshed.

Taking a decompression day once in a while, especially at Home (capital "H") might do more good than never taking a break. Morale is important.