Usually rca jacks run at -10db and xlr +4db, at least that how the interfaces used on my music computer and digital mixer work. I don’t know any of the particular equipment you are using, but I’d look for an input setting on your interface that might adjust for the higher signal level.
I’m just guessing that it might be the -10 vs +4 level issue regarding your equipment setup. You could try putting a 10 to 20 db pad inline on the xlr input path to solve the issue: https://www.amazon.com/PROCRAFT-INLINE-ATTENUATOR-FEMALE-ADAPTOR/dp/B07B1G6PM8/ref=mp_s_a_1_4?crid=3W1VFFZ0Q65TK&keywords=xlr+pad&qid=1689794883&sprefix=xlr+pad%2Caps%2C118&sr=8-4 It’s all about gain staging. Here is a link to a 7-page Gearspace thread about it: https://gearspace.com/board/audio-student-engineering-production-question-zone/566766-4db-10db-what-does-all-mean-exactly.html Somewhere in the thread someone says: “Actually, I learned later that a simple XLR to 1/4” TRS cable going into my interface line inputs solved the too much gain issue"