It's not been publically released on PC yet. Who knows how The Show will play on it. Some games had virtually no input lag, others did in the testing period.
It will also vary depending on your internet, obviously. I've got hardwired fiber with 1 gig download speeds and will be close to a number of servers, so when it's public I may experience virtually no input lag while other people may experience some.
We should see soon since it is supposed to be released before the spring ends and that's not too far away.
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