NVENC and driver version 355.60

Hello,

Starting with drivers version 355.60 for Windows 10 H264 encoded streams fail to play on some devices like Roku 2. In the driver details I see nothing new being mention for NVENC in the driver specs but obviously something did change. Any guidelines of what changed?

Best Regards

For some reason the NVENC H264 encoder coming with the above driver is setting constraint_set4_flag to 1 of the SPS header. This kills some old players which are not prepared for this flag. Why is this flag needed given my settings are profile Main, level 31 and no stereo or multi view encoding? Is this change intentional and are there any flags in NVENC which can disable setting this flag?