Ah, now I see what you mean. I misunderstood.Suppose you have 2 short swords.
You hit on a 3+, because you awesome, and you crit on a 19+. You have trivantage on all attacks.
You hit 99.9% of your attacks (!) with trivantage.
Method 1: Use sneak attack on first hit regardless.
Method 2: Make first attack. If it is a crit, use sneak attack. If not, save it for possible second attack.
Method 1 gives you 0.271271 sneak attack crits, 0.999999 sneak attack hits (or better), 0.542 crits and 1.98 hits.
Method 2 gives you 0.468559 sneak attack crits and 0.999729 sneak attack hits, 0.542 crits and 1.98 hits.
Method 2 gives you better DPR, clearly.
Basically, method 2 is when you are so certain of hitting, a mere hit on your first attack isn't worth burning your sneak attack for.
Method 1 is when your chance of missing on 2nd attack is high enough compared to your chance of hitting on 2nd attack that if you can unload your sneak attack on a mere hit, you should do it.
You should use method 2 when miss chance < crit chance basically.
Crit chance with Champ 3 is 0.271, without is 0.142625. With trivantage, those miss rates correspond to a 14+ (.65^3=27.45% miss chance) and a 12+ to hit (.55^3 = 16.64% miss chance) respectively.
Yup just realized that while thinking about this over dinner. I’ll fix later.So 20 dex +6 proficiency (+11 to hit) against AC 14 (hit on a 3+).
Level 20, Champ 3/Rogue 6, twf style.
99.9% hit chance. I'll call that 1.0 because lazy.
Your attack deals 1d6+5 damage, offhand 1d6+5, plus 9d6 sneak attack damage.
Base is 11d6+10 = 48.5 damage. You have a 27.1% crit chance for another 10d6 or +9.485, sum to 57.985 DPR, and an offhand 27.1% crit chance for +0.9485 DPR, a total of 58.9335 DPR.
With crit fishing your sneak attack crit chance becomes 0.468559, for 14.7596085 DPR, plus 0.542 * 3.5 = 1.897 from weapon crits, totaling to 65.1566085 DPR.
You had Champ 3/Rogue 17 at 58.9 DPR (matching) AND Rogue 20 with crit fishing at the same.
So your math seems off. (a) because I think I'm right, and (b) because you aren't showing a change.
I neglected a 0.002 miss chance, but that won't make that much of a difference.
Ok used your debugger. Your crit fishing is not using SA on the main hand if it crits.
That costs you a bit of DPR.
Also you are missing auto-hit on a crit.
Yes that’s the “crit fishing” option.Do you optimize sneak attack crits?
If your chance to crit in later parts of the turn is greater than your chance to miss, and you hit, you should save sneak attack for a later crit.
Elven accuracy Champion 3 Rogue 17 can really cause pain that way. Or xbe ss champ 5 rogue 15 (3 attacks/round with advantage is 62% crit chance per round (1-.9^(3*3)), and 0.81 average crits/round.