Operating system: Windows-10-10.0.17134 64 Bits
Graphics card: GeForce GTX 1060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 419.17
Broken: version: 2.80 (sub 74), branch: master (modified), commit date: 2019-06-19 13:06, hash: rB72690bbeca85
Worked: Builds made yesterday.
Short description of error
Based on one simple benchmark it previously looked like there was a performance regression but after more extensive testing that appears not to be the case.
At least on Windows 10 / Nvidia 1060, when rendering in Cycles normal tiled mode with denoising on, all tiles which have completed rendering show as rendering (orange tile corners) while they are waiting for the availability of adjacent tile data.
Exact steps for others to reproduce the error
Open the attached
or simply switch to Cycles and enable de-noise. Hit F12.
In progress render looks like: