I've had the same experience. Some things have been just amazing (Wagyu beef short ribs... I really liked the Chicken and Biscuts actually) and the Sticky Toffee Date Cake was one of the best things I've ever eaten... But the last time I went everything was just a little off, I felt. My dessert wasn't great, and neither was my entree. I didn't finish my dessert.
It's hit or miss, but for the price, I think it's not a bad deal to try.