I find the 3-bet size preflop a bit big IP.

The flop cbet size is rather weird as well. Would make more sense to go small or big, not much sense in this half pot bet size.

Turn isn't that great a card for our range. We do have KQss, KJss, QJss but that's it. Unless you are 3-betting a lot of suited connectors preflop. We also don't have 6x nor AT that often. The only top advantage we could have is AA. Unlikely TT due to your flop sizing but possible.

So OOP has an advantage at the very top. Then we have the advantage again with stronger Ax hands. OOP's advantage beats ours so be carefull on these boards. This hand does super well though. Blocks AT, blocks flushes. Bet and call it off.

I agree about the preflop betsize and the flop size. I think on the flop you could even consider checking back here, not quite though if the Ks is a good or bad factor for that. I think I would prefer though to range bet here at 1/3 pot.

What kind of range to do you assign villain preflop? The turn spot is curious because really the occasional TT combo and maybe 66 come to mind. I'm not sure he has AT here. Your format is kind of difficult to read, but villain is UTG here, right? So ATo I would exclude as well. As concerns the flushes, since we block Ks, there really is QJs only, 98s as well although that would be pretty loose. Do you think he would check/raise with some like AJ with the Js? If so, I think it is a clear call. Even if not, probably it's a call with the Ks.