Are enteral feedings poorly tolerated?

When I first got into LTC, I didn't realized how common frequent loose stools were (with bolus and continuous feeders) until I started talking to the CNAs about the bowel patterns. It's been my experience over the years that most of my g-tube feeders have some issues with intolerance. Everything from high residuals, gas/bloating, nausea and or vomiting, loose frequent stools up to frequent bouts of diarrhea. It seems like many are also setting up for IBS, colitis, c-diff, H-pylori etc. I have noticed that those without their gallbladders have a particularly tough time. I've done a little research on my own and have found studies that many of these symptoms are common. I had a peds case in home health care with a tube. Family refused the enteral formulas and went with liquified foods with pediasure to suppliment. This patient did great! Good muscle mass, no excess fatty weight and normal soft stools. I have found that when you alert MDs to the problem, they switch formulas and/or change the flushes or feeding times/amounts - this has rarely solved the problem. I am wondering if anyone else has had similiar experience with this. Thanks!