Ah, that stinks. Venison was a staple growing up, but I’ve never sous vide’d it. Do you have a machine or what? I use a trough heater, temperature probe, and cooler. Did 60 chicken breasts once in a big cooler. So nice having prep grace time. 
Discussion
We have a joule that someone gifted to us a while back. I’ve heard Anova is the brand to go for if you’re ever buying one!