I was working with a C# source member yesterday and my Visual Studio IDE started crashing randomly. I updated from 15.3 to 15.5.4 to see if the problem would go away but it didn't. I saw a few posts when googling that talked about disabling the C# edit and continue option to get rid of this issue. Since I have only ever used edit and continue in VB I thought it was worth a try.
Sure enough since I disabled edit and continue my C# editor hasn't crashed since.