Tricky.
From wikipedia:
" Additionally, the platform switched to an OpenJDK-based Java environment"
“It was reported that the Google Compatibility Test Suite (whose tests must be passed in order to receive official certification) specified that all devices running Nougat must support either Vulkan or OpenGL ES 3.1 graphics APIs”
Unfortunately I haven’t worked with Nougat myself so I can’t help much. But it could be worth investigating if the switch to OpenJDK or OpenGL 3.1 could be the cause.