Steps to reproduce:
1. Open attached repro project "AndroidDownloadFresh.zip"
2. inspect TestScript.cs and leave one of the WWW lines uncommented
3. Make sure vp.skipOnDrop = false is left uncommented
4. Make sure device is connected to internet
5. Build and run on android device
6. Watch video load on the device and play till about 500 frames then get stuck

Expected: Video should not get stuck at any point
Actual: Video is frozen, but playback is still active in the background. After a while the video reaches the "end" and restarts. Gets to about 500 frames again and freezes.

Reproduced on 2018.1.0a5, 2017.3.0b10, 2017.2.0p2, 2017.1.2p3, 2017.1.2p3
Notes: With skipOnDrop enabled you can see a tiny bit of a hitch on the place of the video it would have frozen, but the video then continues normally

Devices Under Test::
Repro:
Google Pixel XL*, OS:8.0.0, CPU:arm64-v8a, GPU:Adreno (TM) 530, Build:google/marlin/marlin:8.0.0/OPR6.170623.012/4283428:user/release-keys

Samsung SM G950U*, OS:7.0, CPU:arm64-v8a, GPU:Adreno (TM) 540, Build:samsung/dreamqltesq/dreamqltesq:7.0/NRD90M/G950USQU1AQC8:user/release-keys

Samsung SM N910F (Galaxy Note 4)*, OS:6.0.1, CPU:armeabi-v7a, GPU:Adreno (TM) 420, Build:samsung/trltexx/trlte:6.0.1/MMB29M/N910FXXS1DQC3:user/release-keys

Samsung SM G903F*, OS:6.0.1, CPU:armeabi-v7a, GPU:Mali-T720, Build:samsung/s5neoltexx/s5neolte:6.0.1/MMB29K/G903FXXU1BQC1:user/release-keys

Lge LG H815 (G4)*, OS:6.0, CPU:arm64-v8a, GPU:Adreno (TM) 418, Build:lge/p1_global_com/p1:6.0/MRA58K/1620215065b6f:user/release-keys

No Repro:
Asus P01Z*, OS:5.0.2, CPU:x86, GPU:Mali-450 MP, Build:asus/WW_P01Z/P01Z:5.0.2/LRX22G/WW_ZenPad-12.26.4.57-20160419:user/release-keys