I tried to look into fixing this myself but I don't know what files it is and how to even do a fix like this.
The problem is, Colter is instantly recharging the static invincibility where you're forced to use thirst zapper. Before, it'd last several seconds but I zap him it goes then in 1 second it's back, barely have time to get a few shots in. I'm forced to use Psycho Jet to do good damage with slowed time.. sure, this makes it more challenging but whenever I come upon this fight I love to mess with him.. use workshop mode and spawn a ton of turrets.. spawn a ton of synth gorillas to which they'll only attack if the shield is down. I'm not sure if it's being done by a mod or just an actual bug,
if someone could do a patch to make it where it stays at the normal default time, That'd be great! Others have appeared to have this issue when I did a google search..