Is the computer slow? Clear some space on your hard drive!
Having less lag and loading time is the equivalent of buying a newer computer. If you only have, say, 30 GB left on your hard drive and there are tons of other programs and apps also hungry for storage space, then your computer will run slower than usual because its memory is fragmented. Consolidating files so that everything can fit in one location leaves more room for them to be accessed at once without taking up too much processing power. While it may not be necessary even if you’re running low on space, it might help minimize faults or faults that stop you from working altogether.