If you have a bad CPU, you will get serious slowdowns. There is absolutely no GPU support, everything is calculated by the CPU. There is an other issue since the original game: performance.
For example, you can teleport into isolated secret rooms, there is no escape from those out. Hopefully, major bugs will be fixed, sometimes it can break your gameplay.
The creators try to fix them, v1.15 is already out, but it is still glitchy. Fortunately I didn't run into most of them, but I experienced some and I read about them. On the bad side of TBoI : The Wrath of the Lamb, the DLC is glitchy! There are so many minor and major glitches. It is a little bit more difficult than before, but it is still OK. In some challenges you start with good items, but there are no item rooms. There is a new challenge mode with ten challenges, they're also fun and worth to play for some new items. Some of the new enemies are challenging but the difficulty is still fair. The new level types and curses and the trinkets makes the gameplay better. It is really satisfying to play The Binding of Isaac - The Wrath of the Lamb. New bosses, enemies, new room types, tons of new items, and new endings. It was cheap, and what I get is, a really good expansion! So many new contents. It was cheap, and what I get is, a really I was really optimistic when I heard about this DLC first time. I was really optimistic when I heard about this DLC first time. Key Features: - 100+ new items! (now over 235 items!) - 5+ new chapters! - 20+ new enemies! - 25 new achievements! - 15+ new bosses! - 6+ new room types! - 6+ new mysterious item drops (eternal hearts, playing cards, dimes and more!) - 5+ new music tracks by Danny B - A new item type, Trinkets - A new challenge mode with 10 unique challenges that unlock more content - A new unlockable character, Samson (The Beserker) - A new final (final) chapter and boss with new endings - Tons of new random happenings, curses, blessings, npcs, fortune tellers and more! - Also more super secrets than you'd probably expect. Following Isaac on his journey players will find bizarre treasures that change Isaacs form giving him super human abilities and enabling him to fight off droves of mysterious creatures, discover secrets and fight his way to safety. Following Isaac on his journey players will find bizarre treasures that change Isaacs form giving him super human abilities and enabling The Binding of Isaac: Wrath of the Lamb is the expansion to The Binding of Isaac, a randomly generated action RPG shooter with heavy Rogue-like elements. Summary: The Binding of Isaac: Wrath of the Lamb is the expansion to The Binding of Isaac, a randomly generated action RPG shooter with heavy Rogue-like elements.Wisps are reset to one if the blue flame does not hit an enemy. For a blue charge, the wisp always stays. If the wisp stays after the flame disappears depends on the type of charge used to activate the blue flame: For a green charge, it only stays if the generated blue flame hit an enemy. For each activation of the candle, a new wisp is added for the duration of the blue flame. Book of Virtues: Wisps are blue and only exist within the current room.The flames from this item can put out fireplaces.The flame projectile can pass over Pits, but can not travel through Rocks or Poop.Flames do not drop any collectibles when doused.Will block Isaac's tears, unlike Red Candle and won't burn him.While Isaac holds the candle above his head, his movement speed is reduced.The flame also destroys enemy shots it comes into contact with.The maximum damage dealt by a single flame is around 276, dealing damage roughly 6 times per second.