Or use the 'do-not-distrub' mode that toggles combat on and off in first-person, so you can explore the world through the eyes of Geralt without getting ambushed and dragged into a kerfuffle. So if you're about to have a moan, try not doing that instead. In the description on their most recent video, SkacikPL reiterates that a lot of the features can be toggled and adjusted - like head bobbing and FOV - and points out that they're one person with limited resources. 'Besides, when combat was not available tons of people were asking me to make it available and now once that is available with the disclaimers that yes - it is bad, people are whining it is terrible.
SkacikPL released the mod sans combat last year, but said, 'people wanted combat - people received combat. Well it's been updated to support combat now, so have fun with that. Remember that mod for The Witcher 3 last year that let you play in first-person? Be the Witcher with the tweaked first-person mod.