When you drink potion of speed you get haste. Haste has these effects, "Target's speed is doubled. It also gains a +2 bonus to AC, advantage to Dex. saves and 1 additional action." so you get one extra main hand attack.
You can buy invisibility potions from Auntie Ethel from Druid Grove and Roah Moonglow from Shattered Sanctum (Goblin camp). When you take long rest, merchants usually replenish their stock so you can buy more potions after resting.
Can you change the language setting in BG3 or how do you manage to play it if you don't understand english?
Too bad you need to leave alive the sadistic hag or the slavetrader halfling to keep access to OP options. I chose to wreck them like the shitheads they are and deserve. Game was a lot harder as a result, but nothing Lazael or Shadowheart (aka Inflict Wounds lady) can't fix.
A lot of the conversational perks of charisma also revolve around letting villains get off easy, so you don't feel rewarded for passing charisma skill checks.
