How to check the phone with bad benchmark tests??

Question

Iron

Hello, I tested Hauwei Honor 8 Note in 3DMark with HiSilicon Kirin 955, Mali-I880 MP4, 4gb RAM and it gave a result of 691 on the SlingShot Extreme test (opengL es 3.1 supported, android 7). In general, judging by the results of the application itself on the 6th android, the results are slightly better, but not the point, since on 6 I was just as bad. When checking overclocking, the processor gives out its 2.5GHz, as I understand it, the problem is somewhere in the gpu, since it is 3d tests with fps 1-10, despite the fact that on openGL 2.0 fps 60. The phone is new, and it has recently been glued to factories started, but the test results are deplorable. The benchmark shows that the results should be 826, and I have 691. the battery is full, all applications are turned off and battery optimization is disabled.