The first Indonesian GP in 25 years has been a complicated affair. A new track, in the middle of a construction site where a new resort is being built. A track which was resurfaced after the test uncovered issues with the asphalt. The blistering tropical heat, capable of raising track temperatures to well over 60°. The swapping out of the rear tire used at the test for an older, safer tire used in Austria and Buriram to prevent the tire from blistering if track temperatures get that high. And the intense rains which leave the track wet for a long time, have eaten into setup time, and keep washing dirt onto the surface.
When working on a problem, such as the correct setup for a MotoGP bike, engineers like to change one variable at a time, to understand how it works. At Mandalika, that just hasn't been possible. The teams already had two new variables – a new track surface and different tires – thrown at them, and the weather is adding a third. It is making it almost impossible to figure out what needs to be changed to make the bikes go faster.