Olynyk wasn't as good as he was playing a couple weeks ago, and he's not as bad as he's playing lately. Give it time, it's not like we're going much of anywhere this year anyway.
But he needs to show that he can deal with bad stretches better than this - during his slump he's been practically invisible except for when someone's blowing by him. Oddly, despite being terrible on D overall today, he had a terrific possession defending Kawhi, and Kawhi was trying his best to get by him. So we know the potential is there, he's just got to bring that up to a semi-regular occurrence instead of once in a blue moon.