I am not a tech expert so any advice from me should be taken with a very large dose of salt. That said, I would point out that XP is pretty old and a lot of newer stuff is likely to run slowly on it. You could take it to a tech or computer repair guy and see what they think. But one possible solution would be to just upgrade to something a little newer.
I am assuming you have, and periodically run an up-to-date anti-virus program.
“I would point out that XP is pretty old and a lot of newer stuff is likely to run slowly on it.”
Microsoft no longer supports or updates XP. They urge you to abandon it and move on to something more recent. A lot of websites no longer function properly with it.
As a side note, thinking maybe it was running too hot, I opened it up and vacuumed out the inside and the cooling fans. Wow, you wouldn’t believe the amount of caked on dust it had accumulated over the years.........kinda looks like the rest of my house. LOL!