Changing skills to too high a value causes the infinitely recurring crash error because of the way it increases arousal. Vren didn't code a failsafe into the calculation because he expected players to play the game normally or use the cheats he recently added, which limited the skills. 99 is overkill, so I recommend settling at a lower value. Try 50s, and if that still results in a crash go lower until it doesn't. That's not a mod thing. I think some attempt has been made in the mod to prevent that crash, but that's not me endorsing it. As for stamina, I don't believe there's any problem raising that as high as you want
I don't use the mod either. I dislike the cruft. I dislike the added characters and their mandatory stories if you wish to sex them. I dislike the alteration of the game's mechanics and the restriction of sex acts due to opinions when the premise of the game is to overcome every woman's inhibitions through dosing. I dislike the genre-crossing invasion of nano-machines (son) and cloning. This is a game about being a date-rape drug czar, not every other sort of mad scientist. I dislike how many of its players are attempting to rebrand the mod into "a newer version of the game" when it is a spin-off. Note I didn't say "just a spin-off", because it's bigger than "just." It's got a lot of content. That makes it bigger, not necessarily better. But what I dislike most of all are the evangelists who think there's something wrong with disliking the mod
BUT, I don't lump DA22 in the zealots crowd. He's enthusiastic about the mod, and inclined towards helpfulness in my experience
Does the mod's standalone bugfix still require the renpy update?