Good luck, I am in the same position and Volt is the #1 reason why I still play solo most of the time. Wisp is a close 2nd.
The times I play public, if I see a Volt or Wisp then I leave. Just unfortunate it's 2 frames that keeps matchmaking set to solo most of the time. Currently have 4473 quit missions and willing to bet half of them are because of Volt/Wisp.
Sure Volt has an "opt out" if you feel like backflipping every 5 seconds, but that's a terrible attempt of an opt out. Wisp is even more annoying with jumping into the abyss to get rid of it. Ultimately this game is just better solo than dealing with people obsessed with speed.
Personally I would be happy with a setting to opt out of all buffs that affect allies. Getting rid of all buffs in my opinion would be a good compromise if it means getting rid of the worst ones.