The Witcher TRPG is a terrible port of Cyperpunk to a fantasy setting with all interlock problems and many new issues. It has so many inconsistencies, so many bugs. The balance of the game is screwed. You can make archer and kill mobs instantly, shooting them in point-blank range. You can make a knight with armor and have your arm torn by a rat due to a dice explosion. If mage fumbles the roll and gets caught in fire, he dies instantly if not having armor. You can kill any mob with combo Stun + Strong Strike to the head. Half of the spells have such terrible wording that you will never guess how they work. Another half of the spells are unbalanced and useless. Most professional skills are total garbage that was never tested (Rolling against x3 Stat, just useless skills, skills that never happen to work). You can check Reddit for holywars and butthurt of players trying to homebrew all this mess to play it.
Of course, here in comments and on the official discord server you will find many Cody's friends who will defend the system and argue with my thesis. Still, everybody has to admit: Witcher TRPG is a weak and unpopular system due to all this mess produced by a lack of playtesting and slack game design.
[1 of 5 Stars!]