Oh I see, that's annoying!
You're intended to be able to hold down both. Are you playing on keyboard? I wonder if it's a simultaneous button press limit issue.
On keyboard yeah. Yep, I did make it up to the first platform once with a few minutes of trying. It's really really difficult still. Can only get maybe half of the beamtime with the jump button press boost, even with holding the beam down.
I'll have to implement a workaround for this then, thanks for letting me know.
It's still possible, but it was way tighter than it should be. (;