There's freeware that I use called WinDirStat. It gives you a visual "block chart" of where your largest files are. Point it at the Content folder above your runtime, and let it index it. Then you can see what's hogging big chunks of space, and delete it. https://upload.wikimedia.org/wikipedia/en/thumb/7/72/Windirstat.png/1200px-Windirstat.png

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