Make sure you have the exact spelling for -disableMods as it won't do anything if it isn't exact.
Crashing could very well be your game running out of RAM. And easy way to test that is to also add the launch option -noWorkshop so the game runs as complete vanilla. If it runs fine then, the crashing is likely due to running out of RAM from having too much workshop content.
If you haven't already set a nice large pagefile, then I recommend doing that. Setting it to 32GB helps the game run much smoother and results in less crashing. This guide explains how to change the pagefile.
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