Boot Drive NTFS Compression

Does anyone here compress their boot drive? I know this will cause a bit of a performance decrease as system files have to be uncompressed before being read and compressed again before being saved, but has anyone done or seen an actual benchmarks on this? I'm currently compressing my boot drive and I've seen some slowdowns in menus and when right-clicking recently, but I'm not sure if that's from the compression or something else(not to mention that I'm just curious). Any insight?