What are you mudding? It looks like cement board it doesn't look like drywall or green back. The cracking is from too much humidity. Place some industrial fans around to circulate the air.
Your inside corners are slightly too thick but shouldn't be an issue to cause the cracking. This is coming from a drywaller that has seen some disastrous DIY home owner jobs.
Inside Corners and Angles are always the worst for holding in the moisture to cause cracking and are always the last to dry. You need air circulation to help the drying process.
Different rooms have more humidity than others especially in a basement. Small rooms you can feel it more so than bigger open areas such as a entertainment room or rumpus area.
There's lots of different factors at play but it all ends with humidity.