Baka may maintenance sa inyong area po, samin nga PLDT, 2 weeks before naayos yung issue ko sa kanila, kasi sa morning okay yung ping, pero pag dating ng hapon, medyo humihina sya. Pero after may 28, natapos na nila yung maintenance nila, it took quite sometime, pero usable pa naman yung wifi, continous 200mbps, pero may day lang, yung 26 na bumaba ng 5mbps yung data, then after 3 hours bumalik ulit sa 200mbps stable. Just wait lang po, or ask your ISP to check if there's something wrong on your lines. Now kasi yung amin, kahit anong oras yan, 26-30ms lagi sa ml.