Looks like the performance is pretty poor, even without sound. What emulators are you running and what resolution are you using ?
Can you run with verbose logging enabled (switch it on in the Runcommand launch menu) and then post the log from /dev/shm/runcommand.log ?
Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first