oscillations in Suzuki DL1000 ABS

I have a Suzuki DL 1000 ABS year 2015, with 7800 kms. When 150 km/hour pass the motorcycle begins to oscillate (it moves like a snake). This movement does it with the topcase and without it. With side suitcases and without them. To reduce these oscillations, I move my body forward and minimize but do not disappear. I have reviewed the direction's bearings and they are fine, the pressures of the pneumatic ones are correct, the pneumatic ones are not deformed or spent. I have the rear and front suspension for hard. I thank you if someone from the forum has had similar experiences and have solved it, please tell me how. I know they are going to say that it is slower and that is what I do lately. Thank you