Complex sentence: It was reported to use large amounts of memory when run for a long time with third party add-on's, there is an upper limit to the size of files that can be shared (2GB), this design decision was to maintain Windows98 support.
Split into simpler sentences: It was reported to use large amounts of memory when run for a long time with third party add-ons. There is an upper limit to the size of files that can be shared (2GB), this design decision was to maintain Windows98 support.