Problems with playback on the website

I have noticed a couple of things that I find a little annoying:
1) When a score is played back, usually the first measure, or part of it, does not play. This is easy to work around by leaving the first measure blank, but purists start their songs in M1. This causes some problems when starting the playback.
2) Lately the scores blank out when being played. i.e. The music plays and the pink highlight moves, but the screen is blank and you cannot read the notes or the lyrics. This seems to correct itself sometimes, to fall back into a blank screen. Most annoying for songs with lyrics. This has been an ongoing problem in the past, and seems to have been corrected eventually. I can only surmise the issue is a hardware or memory problem but may also be due to website volume.