Yep. I haven't bought a Ubisoft game since Black Flag because I can't stand their horrendous optimization. I will keep not buying them until they either fix their shit or I get a CPU that can brute force consistent 60 fps. And only if they release on Steam of course.
Optimization is the least of my issues with Ubisofts games. The boring and repetitive checklist gameplay is a huge turn-off for me. Too bad, because lots of their games have amazing looking open worlds.