SSE vs AVX how much performance different ? Grid 2 and Project Cars 2 1080p low test

Test systemi7 8700K @ 5Ghz core and 4.8Ghz uncoreASRock Z370 Taichi P4.002x8GB DDR4-3500 16-18-18-36-2T (dual ranks double side Hynix AFR)EVGA GTX 1080 Ti @ ...