Game Crashes or IT say cant save to many files

Since 2 weeks my Game Crashes when i try to Change a tune or when i would Like to do a new tune.I kicked Out to the Xbox Dashboard 5or6 Times in the Last 15minutes.And sometimes the Message Pop Out cant save File because you have to many,deleted some Files bevor you can save new files.but i deleted round about 50tunings and IT still says cant save File,to many bla,bla,bla…
What can i do?did someone else have the Same Problem?
thanks for Help
Best greetings

which plataform?
but its been around since December update.