Same in the Upstate - plenty of radio traffic. In this area, I'd estimate they work crashes or other traffic issues at least 80% of the time, which are dispatched over the radio. But I certainly do hear traffic stops over the radio too. I don't hear nearly as many traffic stops as I used to, maybe because there aren't as many troopers out on the road as there used to be and there are more crashes to respond to.
Make sure you have things set up in your scanner to support talkgroup patches. SCHP makes regular use of patches among dispatch talkgroups within troops. This means that at any time, from a scanner standpoint, dispatch for Troop 6 might be on the Charleston/Berkeley talkgroup, and then switch to Dorchester/Colleton, and then switch to Beaufort/Jasper. It doesn't switch often, meaning within seconds or minutes, but may change every few hours. This is used because dispatcher availability fluctuates at different times. If there is only one dispatcher for a troop on duty, they will patch the talkgroups together to make it easier to manage radio traffic.
If you're not set up for patching, you may be missing traffic. I don't know what radio you're using, but my GRE PSR-500 family of radios and Whistler WS-1080 support this feature by default. If I'm monitoring the SCHP Spartanburg talkgroup, but it's patched with the Greenville talkgroup, I'll see "patch" in the display of my scanner. If you're not sure, program in the SCHP Beaufort/Jasper talkgroup and listen to all three Troop 6 dispatch talkgroups. See if you hear more traffic.