I seemed to get bloody loads of chainsuck with SRAM chains on my mtb
I have same problem on my road bike with a triple fitted. But I found that it is the grease that they use in my case, it seems to be far more tacky than a KMC or a shimano, if I degrease the chain before using it which is what I usually do, I do not have a problem, otherwise its poor shifting till I clean it and then oil it or just oil it over the SRAM grease