wsus content ( i believe you referring to wsus post config folder) folder do not store the actual content that is used by clients when installing. WSUS folder store the license information and any 3rd party content that you integrate with ConfigMgr. The actual content of the patches is you download to source files (UNC path, anywhere) and distribute to distribution points.
You should look at expanding the size of the source files that you download the updates to but not wsus content folder.
Regards,
Eswar
www.eskonr.com
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