The current version of Q is 48.15
There have been 3 series of upgrades R46, R47, and now R48. Whether your specific case is 'fixed' or not is anybody's guess since no one can reasonably know anything about your file and your setups and your histories. You best shot is to try the latest R48.15 and see for yourself. If is you still find some downloading issues, I'd still suggest spending some time troubleshooting those rather than immediately backing off the the R44 edition.