accuracy is utter nonsense. so many low rated players play their games poorly but stil get high accuracies. its not impossible for an amateur to win bullet and get 99% accuracy fair n square against an opponent who plays poorly after he/she checkmates him/her in midgame... multiple times!!
the real problem is how chess.com analysis keeps over estimating our 'ingame' strength.
i have played against a 2500 rated bot (don't be fooled by his rating. he's weaker). i copied the PGN and analyzed. we played poorly yet each got over 90% accuracy. i didn't even bother taking much time to move. tried 2nd time in an exact position against the same bot, to check where exactly i made a fatal mistake. still played poorly yet still got another >90% accuracy.
conclusion: accuracy is utter nonsense. it makes me wanna puke. and seriously, i am really offended by this
The highest I've had is a 99.8 in about 10 moves, but I can't seem to find that analysis so I'll post this which is 99.7 (only 7 moves).
Obviously it's not possible to play a long, full game with 100% but maybe short games with only book moves or something of the sort might be possible?
Analysis page