Look, another one in a forum we can’t reply to 
Nothing you ever do on a computer (multi-core processors asides) happens at the same time. Everything happens one after the other, but really quick.
So just do your program this way and you’ll never notice a difference.
I believe these are the Droids you are looking for… 
https://vexforum.com/t/shaft-encoders-to-go-in-a-perfect-line/15505/1
You can reply in the easyC Forum, we encourage you helping each other.
They just enabled it recently. Probably due to the number of posts that are so user answerable, posted in the wrong place.
MarkO
#5
I tried it, doesn’t work… PMed kingofl337, no response yet… Suggestions??