I also suspected Adblock because my wifi dropping issue began about the same time as I installed it but disregarded it when problem continued after removal & I don't have the problem now either.
BUT I certainly think it's possible that rather than Adblock itself causes it maybe something in the phone gets screwed up when you change wifi settings to route all your browsing through adblock. I always suspected my phone misbehaved from that point even after factory reset.
However. . I can certainly say I continue to use wifi all day now trouble free on my E5776 4G router for over 10 days : D
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