Data drops right before text.

I am using Dual Sim, one sim for data and one for voice. When playing Pokemon Go, I noticed that right before I receive a text message, my data signal drops. This happens whenever I am about to receive a text message regardless if I am playing a game or not. I see the LTE symbol go away and then I get a text and then it comes back after about 15-20 seconds. Just wondering if anyone else noticed this and if there is a fix?

Running unlocked rooted. Android 6.0.1 OxygenOS 3.2.2

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