I have had this issue for many months and have been trying , in vain, to get some resolution, It is a frustrating problem that I can not figure out.
I have isolated one cause, although I still get the loud POPS after fixing the problem.
I noticed that if I change the sample rate , i.e. 44.1 to 48k on my MOTU 16A sound card, I get the POP!
Problem is, even after I adjust for proper rates, I do get the POPS. The POPS are loudest and most frequent when running a loop. After a few minutes of the loop running, i get pops on each start point thereafter.
Hello Zargg, my setup does have the snap to nearest audio zero crossings checked.