なんかウェブブラウザで色々コケる
てことでspeedtest.netを見るとパケロスが酷い……

$ speedtest
   Speedtest by Ookla
      Server: Rakuten Mobile, Inc - Sanda (id: 64352)
         ISP: Rakuten Mobile Network
Idle Latency:    52.09 ms   (jitter: 6.63ms, low: 43.74ms, high: 58.91ms)
    Download:    21.73 Mbps (data used: 12.5 MB)
                917.42 ms   (jitter: 89.71ms, low: 67.92ms, high: 1760.52ms)
      Upload:     0.83 Mbps (data used: 1.3 MB)
               1066.09 ms   (jitter: 91.15ms, low: 406.54ms, high: 2860.13ms)
 Packet Loss:    33.7%
  Result URL: https://www.speedtest.net/result/c/aee41277-445e-4048-a069-5f062a8a783c