I was experimenting with different builds yesterday and found that "synergy" skill actually increase sign intensity only for activated skills but not for mutagen themselves.
So despite shown +60% it is actually +55% in characters stats (40 base, 15% from synergy). So overall gain from synergy is max +50% (15+15+15+5). And if you don't use vitality mutagens (because vitality bonus is generally useless), you lose 10% intensity/attack because you need to keep "synergy" activated. So you need to spend 25 character points to get real +40% extra intensity/attack power.. this is garbage, not only potions are not that powerful, but alchemy path itself is not very effective.. yes in boss fights alchemy is your way to prepare for battle without "clearance potions" and will help to defeat much more powerful enemies but the price for this is too high.
The key problem is vitality mutagens.. they must give more useful bonus then vitality.. because it is easy to obtain quen with intensity 150+ (just 9-12 character points) and quen makes you way more durable then any vitality/potions both in absorbed damage and speed of healing.
So despite shown +60% it is actually +55% in characters stats (40 base, 15% from synergy). So overall gain from synergy is max +50% (15+15+15+5). And if you don't use vitality mutagens (because vitality bonus is generally useless), you lose 10% intensity/attack because you need to keep "synergy" activated. So you need to spend 25 character points to get real +40% extra intensity/attack power.. this is garbage, not only potions are not that powerful, but alchemy path itself is not very effective.. yes in boss fights alchemy is your way to prepare for battle without "clearance potions" and will help to defeat much more powerful enemies but the price for this is too high.
The key problem is vitality mutagens.. they must give more useful bonus then vitality.. because it is easy to obtain quen with intensity 150+ (just 9-12 character points) and quen makes you way more durable then any vitality/potions both in absorbed damage and speed of healing.