I have uploaded optiboot bootloader to my nano via ISP. My arduino IDE detects the board as optiboot 8MHz.Also I have selected the optiboot on 32 pin cpu (I have a 328p-au) in the ide.Ok.
But millis() is not accurate (my 1min counter (at 16mhz), only count 48.5sec in order a min when running at 8mhz.
Also IRremote works in a unreliable mode, sometimes receives ok and other times, don´t receive anything. At 16mhz all work as expected.
I should configure something more? What´s the problem with IRremote?
Thanks in advance!