Try this first
 

After the May 22nd update I COULD NOT get on
I was convinced it was THEIR fault :o
I tried a complete system restore 2x and updated my drivers, to no avail :confused:
after MUCH reading about my graphics card(nvidia) Overheating seemed to be the biggest problem
I took my PC apart and cleaned EVERY nook and cranny(you'd be AMAZED at the dust it accumulates) I vacuum it out every month or so. But removing the fans and cleaning the fins behind them WORKED!!!!(and my PC runs so quiet now)
I now play with no crashes and minimal lag! WOOHOO! :D
I suggest anyone having graphics card issues try this first, It really seems to be an issue
Hope this helps!

Rob Embloind
notoriety 9 -I forget the rest

PS
~ remedies can be bought (among other places-medicine men)behind small dock on Port Royal- a dude named Thomas Stareaston-standing outside the house with the fence and haystacks
~You can equip them on the F4 button-helps when fighting much stronger enemies
~On Padres Del Fuego-Double Flintlock pistol can be purchased(2 shots before reloading!!) from the townsperson standing near the well
~also Bane and venom ammo can be puchased from townsperson outside bar(on Padres Del Fuego)
One last thing...IMHO stumps and fly traps are the BEST and safest way(just don't get too close) to build pistol~find them in caves

Yep that's where i found mine

Aye, that be a usual solution, that most ppl ignore. lol

~Cpt.Sea