Don't forget that when you play there are sometimes two performances, the one that you're giving & the one that's being heard by the audience. Very often they're different as was perhaps shown by the fact that you say that you were given more than the usual compliments even though you weren't particularly happy with what was happening. It doesn't mean that one can be complacent when things aren't ideal but there have been occasions when I've found a degree of consolation because of it when I've thought that I wasn't performing as well as I should have. In my opinion it's part of the fascination - and frustration - about performing!