Execution becoming slow

[asdfdsgtegb]

There isn't any good alternative library that I am aware of. But you can easily create a polling encoder code by taking advantage of the thread below:

Using a rotary encoder: simple tutorial

Mark2 of my encoder sketch is attached. My encoder has a push-to-make switch in the knob, so I used that to double up and give 2 independent encoders. Seeing as the pins on the encoder are A and B, I re-used them as D and E; C is the middle pin. If you run it with the serial monitor open, you'll see it keeps track of where you are with the knob either pressed or not. [encoder with button.png] encoder_v5.ino (6.1 KB)

Note that polling drivers will have much lower speed and resolution capabilities. You might improve on this by using direct port manupilation instead of traditional digitalRead commands. But do note that this is a dangerous method for beginners.