Oneplus 5 issue with h+ network

[Ombervuder]

I switched with oneplus 5 and the Connection freeze in h+ for 15/30 second. Then work for 15 second and stops again. Like an infinite loop.

With 4g no problem.

This is an oneplus 5 problem, because i had the same sim and same carrier on 3t and works very well.
4.5.8 version.