Upstream - on 2Mbps you will only ever see 1.6xx Mbps and for the 10Mbps a maximum of 8Mbps.
When you changed in mid-April there was a minor band-plan change which, some users are reporting, has caused a small drop in downstream speed - as to why, no real answers.
An 80Mbps service does use higher frequencies along side those used for a 40Mbps service - in fact they could both use the full spectrum and a 40Mbps cap placed on your line. Noise/interference will cause issues but I doubt that is a major cause if you were originally getting 36 Mbps.
It actually looks as though they may not have actually moved you to Option2 !
Could be that the change was requested and went through but did not correctly propagate through the network but when you moved to a 40/10 the change did go right through.
M H C
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