Nothing could be broken and you're not right about the cache, don't know how to convince you, do you want some links with info? See about raising your pagefile size and search online what is your real issue. I know that ISO for example can't handle files bigger than 2GB, you need UDF format. Just an example that 2GB is magical. Fat32 breaks as well, you need NTFS for them, but I presume you must be using NTFS, on all partitions?