I assume you reinstalled XP pro...this is a common scenario that it runs better after a reinstall but it will bog down with patches and software but most likely your office systems are loaded with malwsre and viruses. Buy Mac or learn about Linux because windows eat shoot and your dollars...
XP Pro is the worst os system I’ve ever seen. In fact, it is so bad, that not even the search system can find my files....
Good grief, msft used to be so easy, you just made separate nice folders for each program on the C drive, and there it was, all nice and tidy...
Now, it’s like going into a house of mirrors.