Can confirm, falling down a MMO hole is a very good way to not have time to read anything! xD I think filtering out crossovers/the SWTOR fandom tag should be enough to keep you spoiler-free on KOTOR fic; I haven't noticed much KOTOR fic with SWTOR elements (vs SWTOR fic with KOTOR elements) but it's been a while since I went looking.

If you get stuck or have further questions, I'll do my best to answer! Oh, and maybe turn off general chat, that can always be a bit bizarre. (Everything from Darth Jar Jar to US politics to my favorite, "no-one plays SWTOR". Delivered completely without the awareness that they are indeed playing SWTOR – at that present moment, no less!)