Just had a little lightbulb moment, the team clearly do not understand the ultrasoft working range. Didnt really use it in testing and now struggling to optimise on it during races. In Aust, issues with overheating tyres in slow twisty final sector, losing traction and now in China losing traction in high and medium speed corners. Hartley was slower than Gasly on mediums at the first phase of race even with high track, ambient temps and little to no wind. I dont buy the wind issues, its the tyre op range they need to optimise the setup with. Bahrain did not feature US so no issues with SS tyres there and the laptimes were promising.
Baku will be interesting, ambient temps will be lower than last years but the track is very kind on tyres. Hopefully they understand the US better but still stock up SS which is only marginally slower. I think the track will suit the engine much more, the long straight is after a lot of slow corners and the deployment has been good so far.