Being in a discord call increase my ping by 25+?

Being in a discord call (Which I am 99% of the time I’m playing overwatch) increases my ping/MS by 25+ It causes my MS to spike up to 700 every few seconds, If I am not in a call It is fine and stable ?

Anything I can do to fix this ?

Although this is more of a question for Discord, not Blizzard, I’d say to turn off the Quality of Service settings in voice.